Chapter: Uncategorized· Mathematics

cos210° - cos10°cos50° + cos250° is equal to (1) 3/2 (2) 3/4 (3) 3/2(cos20° + 1) (4) 3/4(cos20° + 1)

cos²10° - cos10°cos50° + cos²50° is equal to (1) 3/2

(2) 3/4

(3) 3/2(cos20° + 1)

(4) 3/4(cos20° + 1)

Asked 11 Mar 2021 Student doubt jeemain-2019-maths Save WhatsApp Report

1 answer

Best answer

The correct answer is 2) 3/4

Detailed solution ::

Anonymous · 11 Mar 2021 Report

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