Trig Identities

Simplify (Hint: you will need to FOIL first)

• sinθ

• cot²θ

• tan²θ

• cos²θ

Tags

CCSS.HSF.TF.C.8

CCSS.HSA.SSE.B.3

CCSS.HSA.SSE.A.2

4) sinx(cotx+tanx)

• cosx
• cscx+1
• cosx-2
• secx

Tags

CCSS.HSG.SRT.C.7

Simplify

• csc²θ
• sec²θ
• cscθ
• 1

Tags

CCSS.HSF.TF.C.8

CCSS.HSA.SSE.B.3

CCSS.HSA.SSE.A.2

Which of the following would be a step to prove the following identity?

• (1/ sin x) - (1 / cos x)

• (cos x - sin x) / ( sin x)

• (cos x - sin x) / (cos x)

• (1/ sin x cos x)

Tags

CCSS.HSA.SSE.B.3

CCSS.HSA.APR.D.6

CCSS.HSA.APR.D.7

Verify the following:

• cos²x

• sin²x

• cot²x

• tan²x

Tags

CCSS.HSF.TF.C.8

Select all that are Pythagorean Identities.

• sin²(u) + cos²(u) = 1

• sin²(u) - cos²(u) = 1

• tan²(u) + 1 = sec²(u)

• cot²(u) + csc²(u) = 1

• cot²(u) + 1 = csc²(u)

Tags

CCSS.HSF.TF.C.8

CCSS.HSG.SRT.C.8

Simplify.

• sinθ
• cos²θ
• sin²θ
• 1- sin²θ

Tags

CCSS.HSF.TF.C.8

CCSS.HSA.SSE.B.3

CCSS.HSA.SSE.A.2

Simplify.

• sin x
• cos x
• tan x
• 1

Tags

CCSS.HSF.TF.C.8

CCSS.HSF.TF.A.3

Please select the correct solution tan ² x - sec ² x =

• sec ² x - 1

• -1

• 1

• 1 - csc ² x

Tags

CCSS.HSF.TF.C.8

The expression sinx(secx-cscx) is equivalent to:

• 1-tanx
• tanx-1
• 1-cotx
• sinx

Tags

CCSS.HSA.SSE.B.3

CCSS.HSA.SSE.A.2