Which of the following formulas define functions equal to `cos^2 (2x)` wherever defined ? (A)`...
19 views · Published 12 October 2018 · 3:14 · Indexed 3 October 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW Which of the following formulas define functions equal to `cos^2 (2x)` wherever defined ? (A)`1/(1+ tan^2(2x))`(B) `sin^2x. cot^2x` (C) `1/2(1+cos4x)` (D) `(csc^2 (2x)-1) /(csc^2 (2x))`
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