prove that : sin 48 sec 42 + cos 48 cosec 42 =2
3,645 views · Published 11 October 2018 · 2:20 · Indexed 26 September 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW prove that : sin 48 sec 42 + cos 48 cosec 42 =2
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