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The value of cos3θ + sin3θ - cos3θ - sin3θ is equal to cosθ + sinθ cosθ - sinθ
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- - 1
- 1
- 2
- 0
Correct Option: C
| + | cos θ + sinθ | cos θ - sinθ |
| = | cos θ + sin θ |
| = | cos θ - sin θ |
= cos²θ + sin²θ – cosθ . sinθ + cos²θ + sin²θ + cosθ . sinθ
= 1 + 1 = 2
