Introductory Trigonometric Identities

Simplify the trigonometric expression. Select all that apply.

 $\tan\theta\cdot\csc\theta$  

•  $\frac{1}{\cos\theta}$  

•  $\sec\theta$  

•  $\frac{1}{\sin\theta}$  

•  $\csc\theta$  

Simplify the trigonometric expression. Select all that apply.

 $\cot\theta\cdot\sec\theta$  

•  $\frac{1}{\cos\theta}$  

•  $\sec\theta$  

•  $\frac{1}{\sin\theta}$  

•  $\csc\theta$  

True or False

 $\sin^2\theta=1-\cos^2\theta$  

• True
  

• False

True or False

 $\sin\left(-\theta\right)+\cos\left(-\theta\right)=\cos\theta-\sin\theta$  

• True
  

• False

Tags

CCSS.HSF.TF.A.4

Simplify the following trigonometric expression.

 $\tan^2\theta-\sec^2\theta$  

(a)