Engineering Board Exam Reviewer · Trigonometric Identities · hard

ECE Board April 1991: Evaluate: 2 - /1- + 2 - 2

Answer

D.

Solution

Numerator = (2 -1). Denominator =1- + 2 - 2 =1- + 2 -(1- 2 )= (2 -1). The ratio simplifies to / = .

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