sin(0.77x)=-1/2

sin(0.77x)=-1/2
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1 Answer

Sine is negative in quadrants 3 and 4, that is for angles between 180° and 360° (π and 2π radians).

So 0.77x=180+30=210° (7π/6 radians) or 360-30=330° (11π/12 radians).

x=3000/11° (50π/33=4.76 radians approx) or 3000/7° (25π/21=3.74 radians approx).

by Top Rated User (1.2m points)

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