Mathematics · Trigonometry
Evaluate the following trigonometric expression: cos(2θ)cos(3θ) - cos(2θ)cos(7θ) + cos(θ)cos(10θ)sin(4θ)sin(3θ) - sin(2θ)sin(5θ) + sin(4θ)sin(7θ)
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1cos(6θ) · cos(5θ)
- 2cot(6θ) · cos(5θ)
- 3cot(6θ) · cot(5θ)✓
- 4cos(6θ) · cot(5θ)
Correct answer
cot(6θ) · cot(5θ)
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