Pre Calc Formulas

Which is the Reciprocal Identity of cscθ?

• 1/sinθ

• 1/cosθ

• 1/tanθ

• cosθ/sinθ

Reciprocal Identity of secθ?

• cosθ/sinθ

• 1/tanθ

• 1/cosθ

• 1/sinθ

Reciprocal Identity of cotθ

• Cosθ/sinθ = 1/tanθ

• 1/cosθ

• 1/sinθ

Reciprocal Identity 1 =

• sinxcsc or cosxsecx or tanxcotx

• cscxsecx or cosxsinx or tanxcotx

• cosxcscx or sinxsecx or cotxtanx

• Sinxcotx or cosxtanx or secxcscx

Pythagorean identities 1 =

• A^2+b^2=c^2

• sec^2x

• Sin²x+cos²x

• 1+tan²x

Pythagorean Identities sec²x

• sin²x+cos²x

• 1+tan²x

• 1+cot²x

Pythagorean Identities csc²x

• 1+tan²x

• 1+cot²x

• sin²x+cos²x

Pythagorean Identities csc²x

• 1+tan²x

• 1+cot²x

• sin²x+cos²x

Double Angle sin2θ

• 2sinθcosθ

• Cos²θ-sin²θ

• 2cos²θ-1

• 1-2sin²θ

Double Angle cos2θ

• 2sinθcosθ

• Cos²θ-sin²θ

• 2cos²θ-1

• 1-2sin²θ