Mathematics · Trigonometry
If sin A = 2x1+x2, what is the value of cos A?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 11-x22x
- 22x1-x2
- 31-x21+x2✓
- 41+x21-x2
Correct answer
1-x21+x2
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