Trig Lesson 2 - Sin and Cos of complementary angles

Which of the following is equal to the  $\cos\ 35\degree?$  

•  $\sin\ 35\degree$  

•  $\sin\ 55\degree$  

•  $\cos55\degree$  

•  $\cos145\degree$  

Tags

CCSS.HSG.SRT.C.7

Which of the following is equal to the  $\sin\ 8\degree?$  

•  $\sin82\degree$  

•  $\cos8\degree$  

•  $\cos82\degree$  

•  $\sin98\degree$  

Tags

CCSS.HSG.SRT.C.7

If  $\cos\theta=\sin\alpha$  , then  $\theta\ and\ \alpha$  must be

• complementary

• supplementary

• a linear pair

• adjacent

Tags

CCSS.HSG.SRT.C.7

The  $\cos55\degree=\sin$  _________ $\degree$  

Tags

CCSS.HSG.SRT.C.7

 $\sin\left(x+5\right)\degree=\cos45\degree$  

 $x=$  __________

Tags

CCSS.HSF.TF.B.7

 $\sin\left(5x+15\right)\degree=\cos\left(4x-6\right)\degree$  
 $x=$  __________

Tags

CCSS.HSG.SRT.C.7

If  $\cos\beta=\sin\theta$  , then which of the following are true?  Select all that apply.  

•  $\beta+\theta=180$  

•  $\beta+\theta=90$  

•  $90-\beta=\theta$  

•  $180-\theta=\beta$  

•  $\theta-90=\beta$  

Tags

CCSS.HSG.SRT.C.7

Given the ratio  $\frac{6}{10},$  which of the following is NOT equal to this value? 

•  $\cos\angle B$  

•  $\frac{AB}{BC}$  

•  $\sin\angle C$  

•  $\cos\angle C$  

Tags

CCSS.HSG.SRT.C.6

Which of the following statements is FALSE?

• $\sin15\degree=\cos65\degree$

• $\sin70\degree=\cos20\degree$

• $\cos43\degree=\sin47\degree$

• $\sin12\degree=\cos78\degree$

Tags

CCSS.HSG.SRT.C.7

Which of the following are true? Select all that apply.

• $\cos B=\frac{6}{10}$

• $\sin C=\frac{8}{10}$

• $\tan B=\frac{8}{6}$

• $\sin B=\cos C$

• $\sin B=\frac{8}{10}$

Tags

CCSS.HSG.SRT.C.6