If `cos theta + sin theta =1` prove that `cos theta -sin theta=+-1`
135 views · Published 12 October 2018 · 1:46 · Indexed 1 October 2026
Channel: Doubtnut · 2018 · Education
To ask Unlimited Maths doubts download Doubtnut from - https://goo.gl/9WZjCW If `cos theta + sin theta =1` prove that `cos theta -sin theta=+-1`
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