Engineering Board Exam Reviewer · Trigonometric Identities · medium

Find the exact value of 75°.

1. sqrt(3) + 2 3.732
2. 2 - sqrt(3) 0.268
3. 1 + sqrt(3) 2.732
4. sqrt(3) 1.732

Answer

A. sqrt(3) + 2 3.732

Solution

75°= (45°+30°)= 1+1/ 31-1/ 3= 3+1/ 3-1=2+ 3.

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