if `cosalpha=12/13, cosbeta=3/5, cosgamma=63/65` and `alpha,beta,gamma` are positive acute angl...
1,099 views · Published 11 October 2018 · 4:50 · Indexed 23 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW if `cosalpha=12/13, cosbeta=3/5, cosgamma=63/65` and `alpha,beta,gamma` are positive acute angles, then `alpha+beta+gamma` is equal to
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