cpam 7.1.1

Please select the correct solution 
cos ² x + sin ² x=  

• 1
• csc ² x + sec ² x
• sin ² x
• 1 - sin ² x

Tags

CCSS.HSF.TF.C.8

What is csc(x) equivalent to?

• 1/sin(x)
• 1/tan(x)
• sin(x)
• 1/cos(x)

Tags

CCSS.HSF.TF.A.4

Is this a pythagorean identity?
tan²x + 1 = secx

• Yes
• No

Tags

CCSS.HSF.TF.C.8

Please select the correct solution

• csc x
• sec x
• cot x
• tan x

Tags

CCSS.HSF.TF.C.8

*

• sin x
• cos x
• tan x
• csc x

Tags

CCSS.HSF.TF.A.2

CCSS.HSF.TF.A.3

CCSS.HSF.TF.A.4

CCSS.HSF.TF.C.8

Which of the following is not a pythagorean identity?

• cot²x + 1 = csc²x

• csc²x + 1 = cot²x

• cot²x - csc²x = -1

• csc²x - cot²x = 1

Tags

CCSS.HSF.TF.C.8

Reciprocal identity: cos x =

• 1/csc x

• 1/sec x

• 1/sin x

• 1/cos x

Tags

CCSS.HSF.TF.A.4

Which one of the following angles is a good counterexample for the rule:

 $\sin x\ +\ \cos x=1$  

•  $0\degree$  

•  $90\degree$  

•  $45\degree$  

•  $150\degree$  

Select all of the angles that are good counterexamples for the statement:

 $\sin x+\cos x=-1$  

•  $60\degree$  

•  $180\degree$  

•  $225\degree$  

•  $330\degree$