Pythagorean Identities

 $\sin^2x\ -1=?$  

•  $-\cos^2x$  

•  $\cos^2x$  

•  $\cos^2x-1$  

•  $1-\cos^2x$  

Tags

CCSS.HSF.TF.C.8

 $\tan^2x\ =?$  

•  $\sec^2x-1$  
  

•  $\sec^2x+1$  

•  $1-\sec^2x$  

Tags

CCSS.HSF.TF.C.8

Which of the following is not a Pythagorean Identity?

• $\cot^2x+1=\csc^2x$

• $\cot^2x-\csc^2x=-1$

• $\csc^2x+1=\cot^2x$

• $\csc^2x-\cot^2x=1$

Tags

CCSS.HSF.TF.C.8

CCSS.HSF.TF.A.3

 $1-\cos^2x=?$  

•  $\sin^2x$  

•  $\tan^2x$  

•  $\cot^2x$  

•  $\csc^2x$  

Tags

CCSS.HSF.TF.C.8

 $\csc^2x=?$  

•  $1+\cot^2x$  

•  $1-\cot^2x$  

•  $\cot^2x-1$  

 $1-\sin^2x=?$  

•  $\tan^2x$  

•  $\cos^2x$  

•  $\cot^2x$  

•  $\csc^2x$  

Tags

CCSS.HSF.TF.C.8

CCSS.HSG.SRT.C.8

 $\frac{\left(\sin x\right)}{\left(\cos x\right)}=?$  

•  $\csc x$  

•  $\sec x$  

•  $\cot x$  

•  $\tan x$  

Tags

CCSS.HSF.TF.A.4

Which of the following is NOT a Pythagorean Identity?

• $\tan^2x+1=\sec^2x$

• $\cos2x=\cos^2x-\sin^2x$

• $\sin^2x+\cos^2x=1$

• $1+\cot^2x=\csc^2x$

Tags

CCSS.HSF.TF.C.8

 $\cos^2x+\sin^2x=?$  

•  $1$  

•  $\csc^2x+\sec^2x$  

•  $\sin^2x$  

•  $1-\sin^2x$  

Tags

CCSS.HSF.TF.C.8

Rewrite tan(x) in terms of sin(x) and cos(x)

• tan(x) = cos(x) / sin(x)

• tan(x) = 1 / cot(x)

• tan(x) = sin(x) / cos(x)

• tan(x) = opp / adj