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39 Cards in this Set
- Front
- Back
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30° = π/
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30° = π/6
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45°=π/
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45°=π/4
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60°=π/
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60°=π/3
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sin 30°=
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sin π/6= 1/2
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sin45°=
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sin π/4= √2/2
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sin60°=
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sin π/3 = √3/2
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cos 30°=
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cos π/6= √3/2
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cos 45°=
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cos π/4= √2/2
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cos 60°=
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cos π/3 = 1/2
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tan 30°=
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tan π/6= √3/3
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tan 45°=
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tan π/4=1
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tan 60°=
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tan π/3 = √3
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sin (90°-θ)=
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cos θ
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tan (90°-θ)=
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cot θ
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sec (90°-θ)=
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csc θ
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cos θ= (Rec)
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1/sec θ
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tan θ= (rec)
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1/cotθ
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sin θ= (rec)
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1/csc θ
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tan θ= (Quo)
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sin θ/cos θ
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cot θ= (quo)
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cos θ/ sin θ
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sin² θ + cos² θ=
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1
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1 + tan² θ=
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sec² θ
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1 + cot² θ=
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csc² θ
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sin=
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opp/hyp
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cos=
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adj/hyp
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tan=
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opp/adj
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sec=
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hyp/adj
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csc=
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hyp/opp
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cot=
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adj/opp
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If sinx=cosy then x+y=?
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90! You can set the equation equal to 90 and solve.
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How many ounces are in a cup?
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8
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How many cups are in a pint?
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2 cups or 16 fl oz
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How many pints, cups and ounces are in a quart?
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2 pints, 4 cups and 32 fl oz
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How many cups, pints, fl oz, quarts and liters are in a gallon?
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4 quarts, 8 pints, 16 cups 128 fl oz and 3.79 L.
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What is the equation for simple interest?
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I=PRT (principle) (rate in decimal form) (time)
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How can you calculate the money in an account after n years of compounded interest? What if it's compounded quarterly?
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A=P(1+r)n. Quarterly is A=P(1+r/4)^4 monthly is A=P(1+r/12)^12
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An inscribed angle is what compared to the outer angle?
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It is half as large. If the arc is 60 deg. the angle is 30 deg.
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How do you go about figuring out probability of r success of n trys? For example, 4 kids: four girls and 1 boy IN THAT ORDER or 5 kids, 2 blond girls (prob of blond .25) and 3 brown boys (prob .75) in no particular order?
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There is only 1 way to have 4 girls and 1 boy in that order. So you multiply the probability of each. .5^5 or 1/32. In the next we need to apply both probability and number of possibilities. The probability of 1 possibility is:
1 blond girl= (.5*.25)=.125 1 brown boy= (.5*.75)=.375 One possibility is (.375^3)*(.125^2)=0.000823 How many possible orders are there? N/(S!T!U! etc.) where S T and U are the numbers in each different group (note, if I had said blond boys as well in there, that would be its own group.) So, 5!/(2!*3!)=10 Total is 10*.000823= .00823 |
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How do you calculate the mean, variance and standard deviation of a population?
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Mean is all added up and divided by the number of individuals. Variance is sum of (each individual-mean)^2/(#individuals) (E(X-M)^2/(#X)). Standard deviation is sqrt(v).
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