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anonymous
 4 years ago
Can anyone please explain how to use Double and Half Angle formulas to find exact values?
anonymous
 4 years ago
Can anyone please explain how to use Double and Half Angle formulas to find exact values?

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anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0of any given number both on and off the Unit Circle. For example if I needed to find the a) sin(2x) b) cos(2x) c) sin(x/2) and d) (cos x/2) if the cos(x)=(3/5), 0<x<(π/2)

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0\[\sin (2x)=2\sin x.\cos x\] \[\cos (2x)=\cos ^{2}x \sin ^{2}x\] in which the angle 2x is divided by 2 .. if it was x/2 << divide it bye 2 to be x/4 dw:1327542672309:dw

anonymous
 4 years ago
Best ResponseYou've already chosen the best response.0dw:1327542889414:dw
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