Question: 3 for a with 0...

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3. For a θ with 0 < θ < π/2, let P, Q and R be the three points on the unit circle (the circle of radius 1 centered at the origin) that make angle θ, π-θ and-9 with the x-axis respectively. If P-(x,y), use the symmetries of the picture to explain why Q-(-x,y) and R-(x-y). Conclude that: sin( π-0)-sin(8) cos(π-θ)--cos(0) cos(-0) cos(6) sin(-e)sin(e)

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Question: 3 for a with 0...

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