If the expression `4sin5alphacos3alphacos2alpha` is expressed as the sum of threes sines then t...
159 views · Published 12 October 2018 · 2:04 · Indexed 3 October 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW If the expression `4sin5alphacos3alphacos2alpha` is expressed as the sum of threes sines then two of them are `sin4 alpha` and `sin10alpha`. The third one is (a)sin`8alpha` (b)sin`6alpha` (d)sin`5alpha` (d)sin`12alpha`
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