Pure Math 30
a. (tan x)(sec x) b. cos2x – sin2x. c. tan A sin A d. 2cos x sec x – tan x cot x. Simplify the following. [7 marks] sin (90( + A) cos (B – 90() cos 150( cos 20( – sin 150( sin 20(Find the exact value of the following. [4 marks] sin ((/12) cos (15() cos (11(/12) Given and is in Quadrant II, evaluate sin ( + ) using exact values. [3 marks] ................
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