Question

what is sin(-1860) in trig

Answer 1

Step-by-step explanation:

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Answer 2

Answer:

5 × 360 = 1800

So θ=1860° is an angle in the first quadrant,with reference angle of 60°.

Sine is positive in the 1st and 2nd quadrants,

So :sin(1860°) = sin (60°) = [sqrt(3)]/2.