How do you evaluate $sin (- 135)$ $sin(-135)$ ?

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Answer 1 · 2015-11-14T23:01:41

Evaluate sin (-135)

Ans: $- \frac{\sqrt{2}}{2}$ $-sqrt2/2$

Trig Table of Special Arcs and unit circle give:

$sin (- 135) = sin (45 - 180) = - sin (45) = - \frac{\sqrt{2}}{2}$ $sin (-135) = sin (45 - 180) = - sin (45) = -sqrt2/2$

How do you evaluate sin(−135)sin(-135)?