Solution: Evaluate arc cot [2cos (arc sin 0.5)]

Evaluate arc cot [2cos (arc sin 0.5)]. How to evaluate trigonometric equation?

Evaluate arc cot [2cos (arc sin 0.5)]

Problem Statement: EE Board October 1992

Evaluate arc cot [2cos (arc sin 0.5)]
  • A. 30°
  • B. 45°
  • C. 60°
  • D. 90°

Problem Answer:

The equivalent value is 30°


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