trigreview - Trigonometric Formulas Summary Sheet 0 30 45...

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Trigonometric Formulas - Summary Sheet θ radians sin cos 0 0 1 30° 6 1 2 3 2 45° 4 2 2 2 2 60° 3 3 2 1 2 90° 2 1 0 Remember that, on the unit circle, cosine represents the x coordinate and sine the y coordinate. Based on this, you can determine the values of sine and cosine for all multiples of the above angles (adjust the signs accordingly to the quadrant). Some definitions of trig functions: tan x = sin x cos x sec x = 1 cos x csc x = 1 sin x cot x = 1 tan x = cos x sin x Some basic identities: sin
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