Mathematics · Trigonometry
If α = 3 sin-1611 and β = 3 cos-149, where the inverse trigonometric functions take only the principal values, then which of the following is correct?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1cos(α) < 0✓
- 2cos(α+β) > 0
- 3sin(β) < 0
- 4cos(β) > 0
Correct answer
cos(α) < 0
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