Determine the formula for cos and sin


1) Determine the formula for Cos(4theta) in terms of Cos{Theta}.

2) Suppose that V is in interval (-pi/2, 0)...Tan V=-1/12 find sin(2V)

3) Suppose that V is in interval (0, pi/2) and sinV=1/5, find Sin(2V)

4) Suppose that V is in interval (0, pi/2) and SinV=1/5 find Tan(2V)

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Mathematics: Determine the formula for cos and sin
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