Find the exact value of each trigonometric function

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asked Nov 13, 2018 25.9k views

1 Answer

Keyjote · Answer 1 · 2018-11-20T15:55:39+0000

945° | 360°
-720 2
225°

So we say that this value corresponds to 2 laps plus the rest 225°.

However, since it has a negative sign, it says that it is oriented 360 ° at 0 °.
360° - 225°

135°

Soon:

cos -945° = cos 135°

cos -945° = (-√2÷2) or -0,70

Find the exact value of each trigonometric function

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