If `cosalpha+cosbeta+cosgamma=0=sinalpha+sinbeta+sin gamma` then (a)`sin^2alpha+sin^2beta+sin^2...
265 views · Published 12 October 2018 · 10:47 · Indexed 4 October 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW If `cosalpha+cosbeta+cosgamma=0=sinalpha+sinbeta+sin gamma` then (a)`sin^2alpha+sin^2beta+sin^2gamma=3/2` (b)`sin^2alpha+sin^2beta+sin^2gamma=3/4` (c)`cos^alpha+cos^2beta+cos^2gamma=3/2` (d)`cos2alpha+cos2beta+cos2gamma=-1`
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