Question

प्रश्न.8. cos(-1080°) का मान ज्ञात कीजिये ?​

Answer 1

Answer:

If 1080 is a measurement in degrees, then cos(1080°) = 1. Since the cosine function periodic with a period of 360°, and cos(360°) = 1, then cos(1080°) = cos(3•360) = 1. If, on the other hand, 1060 is a measurement in radians, then cos(1080) is approximately -. 2836.

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