Review for 5.1 - 5. 2 Quiz

sec²x - 1 =

• cot²x

• csc²x

• 1 + tan²x

• tan²x

Tags

CCSS.HSF.TF.C.8

cos(-u)

• cos(u)

• -cos(u)

• sin(u)

• -sec(u)

• sec(u)

Tags

CCSS.HSF.TF.A.2

CCSS.HSF.TF.A.4

Simplify:  tanxcotx-cos²x

• tanx
• cotx
• sin²x
• cos²x

Tags

CCSS.HSA.SSE.A.2

CCSS.HSA.SSE.B.3

Given sin⊖ = -1/3 and cos⊖ = (2√2)/3, find the exact value for cot⊖.

• -2√2
• (3√2)/4
• -3
• -√2/4

Tags

CCSS.HSF.TF.C.8

Given sin⊖ = 2/3 and tan⊖ <0, find the exact value for cos⊖. Hint: Use a pythagorean identity!

• 3/2

• -√5/3

• √5/3

• -2/3