Mathematics · Trigonometry
If a = x cosθ + y sinθ and b = x sinθ - y cosθ, then a 2 + b 2 is equal to:
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1x - y
- 2x 2 + y 2✓
- 3x 2 - y 2
- 4x + y
Correct answer
x 2 + y 2
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