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Question 1 of 21

Mathematics > trigonometry > Trigonometric Functions And Identities

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Question 1

The value of cos⁡210∘−cos⁡10∘cos⁡50∘+cos⁡250∘\cos^2 10^\circ-\cos 10^\circ\cos 50^\circ+\cos^2 50^\circ is :

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