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Sum and Difference/Double Angle

Authored by Rachel Johns

12th Grade

CCSS covered

Used 2+ times

Sum and Difference/Double Angle
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9 questions

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1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Find the exact value of cos 75°75\degree  

 624\frac{\sqrt{6}-\sqrt{2}}{4}  

 5+34\frac{\sqrt{5}+\sqrt{3}}{4}  

 12\frac{1}{2}  

 264\frac{\sqrt{2}-\sqrt{6}}{4}  

Tags

CCSS.HSF.TF.C.9

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Find the exact value of sin  75°75\degree  

 2+64\frac{\sqrt{2}+\sqrt{6}}{4}  

 84\frac{\sqrt{8}}{4}  

 264\frac{\sqrt{2}-\sqrt{6}}{4}  

 74\frac{\sqrt{7}}{4}  

Tags

CCSS.HSF.TF.C.9

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Given angle A and B in Quadrant I with  sinA =1213 and cosB =35 find cos(A+B)\sin A\ =\frac{12}{13}\ and\ \cos B\ =\frac{3}{5}\ find\ \cos\left(A+B\right)  

 3365-\frac{33}{65}  

 3365\frac{33}{65}  

 12\frac{1}{2}  

 1213\frac{12}{13}  

Tags

CCSS.HSF.TF.C.9

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

 Given cosθ=513 and 3π2<θ<2π find sin2θGiven\ \cos\theta=\frac{5}{13}\ and\ \frac{3\pi}{2}<\theta<2\pi\ find\ \sin2\theta  

 120169\frac{120}{169}  

 120169-\frac{120}{169}  

 2426\frac{24}{26}  

 1026\frac{10}{26}  

Tags

CCSS.HSF.TF.C.9

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

 Find the exact value of tan π12Find\ the\ exact\ value\ of\ \tan\ \frac{\pi}{12}  

 333+3\frac{3-\sqrt{3}}{3+\sqrt{3}}  

 131+3\frac{1-\sqrt{3}}{1+\sqrt{3}}  

 13\frac{1}{\sqrt{3}}  

 33\frac{\sqrt{3}}{3}  

Tags

CCSS.HSF.TF.C.9

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

The tangent of angle x is shown, find sin2x if  π2<x<π and tanx=2103.\frac{\pi}{2}<x<\pi\ and\ \tan x=-\frac{2\sqrt{10}}{3}.   

 120119-\frac{120}{119}   

 336625-\frac{336}{625}   

 336625\frac{336}{625}  

 121049-\frac{12\sqrt{10}}{49}   

Tags

CCSS.HSF.TF.C.9

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Given tan α = 3/4  and  tan β = (-1/2) 
Please find the sum and difference:
tan (α-β)=

(-10√5)/25
(-2√5)/25
(√2-√6)/4
2

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