Inverse Trig Functions Vocabulary Inverse Cosine Function (cos -1 ) – The function y=cos -1 x = Arccos x, if and only if x = cos y and 0 ≤ y ≤ π Inverse.

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Presentation transcript:

Inverse Trig Functions

Vocabulary Inverse Cosine Function (cos -1 ) – The function y=cos -1 x = Arccos x, if and only if x = cos y and 0 ≤ y ≤ π Inverse Sine Function (sin -1 ) – The function y=sin -1 x = Arcsin x, if and only if x = sin y and - π / 2 ≤ y ≤ π / 2 Inverse Tangent Function (tan -1 ) – The function y=tan -1 x = Arctan x, if and only if x = tan y and - π ≤ y ≤ π

Inverse Cosine Function

Inverse Sine Function

Inverse Tangent Function

All of These Mean the Same Thing

Finding Inverse Values Press 2 nd Press Trig button in equation (sin,cos,tan)

Examples

Solving for θ

Homework Inverse Trig Worksheet All odds, 26