Trigonometric Identities

 $\frac{\sin x}{\cos x}$  

•  $1$  

•  $\sin^2x$  

•  $1-\cos^2x$  

• tanx

tanx*cosx

• tanx

• sinx

• cosx

• 
  

  $\frac{1}{\tan x}$
  

 $\sin^2x+\cos^2x=\ ?$  

• 1

• 0

• -1

• 2

Tags

CCSS.HSF.TF.C.8

 $\sin^29x+\cos^29x=\ ?$  

• 1

• 9

• 4.5

• 3

Tags

CCSS.HSF.TF.C.8

 $2\cos^2x-1\ \equiv$  

•  $\tan x$  

•  $1-\sin^2x$  

•  $2-2\sin^2x$  

•  $\sin^2x$  

sinx= -3, one of the solutions of the equation is:

x (in degrees)

• X= 30

• x=60

• x=235

• None

Tags

CCSS.HSF.TF.B.7

sinx= -0.5

One of the solutions of X in (degrees)

Where 0<x<360

• -30

• 150

• 330

• 30

Tags

CCSS.HSF.TF.B.7