Trig_Review

# Trig_Review - •(sin x = cos x(cos x =-sin x •(tan x =...

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Important Trigonometric Formulas sin 2 x + cos 2 x = 1 2 sin x cos x = sin(2 x ) sin x cos x = tan x cos x sin x = cot x sec x = 1 cos x csc x = 1 sin x Addition and Subtraction Formulas : sin x cos y + cos x sin y = sin( x + y ) sin x cos y - cos x sin y = sin( x - y ) cos x cos y - sin x sin y = cos( x + y ) cos x cos y + sin x sin y = cos( x - y ) Review Trig Functions of “Special Angles” in the 1st quadrant. And understand how to use the unit circle with “cos” as the x-axis and “sin” as the y-axis to find the Trig Function of “Special Angles” in other quadrants.
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Unformatted text preview: • (sin x ) = cos x (cos x ) =-sin x • (tan x ) = sec 2 x (cot x ) =-csc 2 x • (sec x ) = sec x tan x (csc x ) =-csc x cot x Derivatives of Inverse Trigonometric Functions • (sin-1 x ) = 1 √ 1-x 2 (cos-1 x ) =-1 √ 1-x 2 • (tan-1 x ) = 1 1+ x 2 (cot-1 x ) =-1 1+ x 2 • (sec-1 x ) = 1 x √ x 2-1 (csc-1 x ) =-1 x √ x 2-1 1...
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