Trig Proofs

The first statement in a proof is the

• Assumed

• Given

• Known

• Set

You can manipulate both sides of a proof

• True

• False

Sometimes it makes a proof easier to convert everything to

• Pythagorean identities

• their reciprocal identities

• tangents and cotangents

• sines and cosines

To add and subtract fractions you need a

• common denominator

• sine in the denominator

• different denominators

• cosine in the denominator

Tags

CCSS.4.NF.B.3C

CCSS.4.NF.B.3D

After each step in a proof look for

• sines and cosines

• a common denominator

• an identity

• tangents

Tags

CCSS.HSF.TF.C.9

sin²θ+cos²θ=

• csc²θ
• sec²θ
• 1
• csc²θ - 1

Tags

CCSS.HSF.TF.C.8

Please select the correct solution

• csc x
• sec x
• cot x
• tan x

• sin(θ)

• cos(θ)

• sec(θ)

• csc (θ)

Simplify.

• sinθ
• cot²θ
• tan²θ
• cos²θ

Tags

CCSS.HSF.TF.C.8

CCSS.HSG.SRT.C.8

True or False, tan(x)cot(x) = 1?

• True

• False