(a) Given that P (0.707, 0.707) is a point on the unit circle with angle 45, estimate
Chapter 7, Problem 7.2.14(choose chapter or problem)
(a) Given that P (0.707, 0.707) is a point on the unit circle with angle 45, estimate sin 135 and cos 135 without a calculator. (b) Given that Q (0.259, 0.966) is a point on the unit circle with angle 75, estimate sin 285 and cos 285 without a calculator.
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