If in a triangle ABC, `sin^4A+sin^4B+sin^4C=sin^2B sin^2C+2 sin^2C sin^2A+2sin^2A sin^2B`, show...
779 views · Published 11 October 2018 · 8:56 · Indexed 28 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW If in a triangle ABC, `sin^4A+sin^4B+sin^4C=sin^2B sin^2C+2 sin^2C sin^2A+2sin^2A sin^2B`, show that, one of the angles of the triangle is `30^@` or `150^@`
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