Mathematics · Trigonometry
Given that A and B are second quadrant angles, sin A = 1 3 and sin B = 1 5 , then find the value of cos(A − B).
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 14√3 − 1 15
- 28√3 + 1 15✓
- 38√3 − 1 15
- 44√3 + 1 15
Correct answer
8√3 + 1 15
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