Engineering Board Exam Reviewer · Inverse Trigonometric Functions · medium

EE Board October 1992: Evaluate arccot[2 ( 0.5)]

1. 30°
2. 45°
3. 60°
4. 90°

Answer

A. 30°

Solution

(0.5)=30°. 2 30°=2≤ft( 3/2 )= 3. arccot( 3)=30° (since 30°= 3).

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