WHAT WILL BE THE ANGLE, IF SIN IS EQUALS TO 4/5
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Answer: sin x = − 4/ 5 = − 0.8
Calculator gives --> x = -53.15 deg
On the trig unit circle, there are 2 arcs that have the same sin value (-0.8), within the interval
( − π , π ) . x = 180 + 53.13 = 233.13 , and x = 360 − 53.13 = 306.87 degrees
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