Mathematics · Trigonometry
If cos A − sin A = √2 sin A, then cos A + sin A is equal to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1sin A
- 2√2 cos A✓
- 3−√2 sin A
- 4−√2 cos A
Correct answer
√2 cos A
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