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Sum/Difference Identities

Authored by Jaclyn Dragon

Other

12th Grade

CCSS covered

Used 108+ times

Sum/Difference Identities
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10 questions

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1.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Which of the following is equivalent to  tan (AB)\tan\ \left(A-B\right)  

 tan A  tan B\tan\ A\ -\ \tan\ B  

 tan A tan B1+ tanAtanB\frac{\tan\ A\ -\tan\ B}{1+\ \tan A\tan B}  

 tan A +tan B1 tanAtanB\frac{\tan\ A\ +\tan\ B}{1-\ \tan A\tan B}  

 sin Acos B\frac{\sin\ A}{\cos\ B}  

Tags

CCSS.HSG.SRT.C.7

2.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Expand  sin (33o +42o)\sin\ \left(33^{o\ }+42^o\right)  

 sin 75o \sin\ 75^{o\ }  

 sin 33ocos42o+cos33osin42o\sin\ 33^o\cos42^o+\cos33^o\sin42^o  

 sin 33ocos42ocos33osin42o\sin\ 33^o\cos42^o-\cos33^o\sin42^o  

 cos33ocos42o+sin33osin42o\cos33^o\cos42^o+\sin33^o\sin42^o  

Tags

CCSS.HSG.SRT.C.7

3.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

 cos75ocos15osin75o sin15o\cos75^o\cos15^o-\sin75^{o\ }\sin15^o  is equivalent to

 sin 90o \sin\ 90^{o\ }  

 sin 60o \sin\ 60^{o\ }  

 cos 90o \cos\ 90^{o\ }  

 cos 60o \cos\ 60^{o\ }  

Tags

CCSS.HSF.TF.C.9

4.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

 tan45o+tan30o1tan45otan30o\frac{\tan45^o+\tan30^o}{1-\tan45^o\tan30^o}  is equivalent to

 tan75o\tan75^o  

 tan 15o\tan\ 15^o  

 sin45ocos30o\frac{\sin45^o}{\cos30^o}  

 tan90o \tan90^{o\ }  

Tags

CCSS.HSF.TF.C.9

5.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Use sum or difference angles identity to find the exact value for       sin (15o)\sin\ \left(-15^o\right)  

 6+24\frac{\sqrt{6}+\sqrt{2}}{4}  

 624\frac{\sqrt{6}-\sqrt{2}}{4}  

 264\frac{\sqrt{2}-\sqrt{6}}{4}  

 32-\frac{\sqrt{3}}{2}  

Tags

CCSS.HSF.TF.C.9

6.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

Given  sinx=35and siny=23,\sin x=\frac{3}{5}and\ \sin y=\frac{2}{3},  where  x and yx\ and\ y  are both in first quadrant.   Evaluate sin(x+y)Evaluate\ \sin\left(x+y\right)  

 35+815\frac{3\sqrt{5}+8}{15}  

 45+615\frac{4\sqrt{5}+6}{15}  

 25+1215\frac{2\sqrt{5}+12}{15}  

 45+25\frac{4\sqrt{5}+2}{5}  

Tags

CCSS.HSF.TF.C.9

7.

MULTIPLE CHOICE QUESTION

15 mins • 1 pt

sin 105º

√3/2
-1/4(√2 + √6)
1/4 (√2 + √6)
2-√3

Tags

CCSS.HSF.TF.C.9

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