If `alpha and beta` are positive. acute angles and `cos 2alpha=(ncos 2 beta-1)/(n-cos2 beta
594 views · Published 13 October 2018 · 3:52 · Indexed 28 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW If `alpha and beta` are positive. acute angles and `cos 2alpha=(ncos 2 beta-1)/(n-cos2 beta) (n lt 1)`, show that, `sqrt(n-1)tanalpha = sqrt(n+1) tanbeta`.
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