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How do you prove that sinθ plus cosθ2 plus sinθ-cosθ2 equals 2?
Wiki User
∙ 14y ago
Sinθ plus cosθ2 plus sinθ-cosθ2 equals 2 does not equal 2. It equals 2sinθ. The cosθ2 terms cancel out and you are left with sinθ + sinθ which is 2sinθ.
Wiki User
∙ 14y ago
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Using a calculator
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Yes
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This is called the Abel-Ruffini theorem.
