Mathematics · Trigonometry
निम्नलिखित कथनों पर विचार कीजिए: 1. tanθ + sinθtanθ - sinθ = secθ + 1secθ - 1, जहाँ 0 < θ < π2 है। 2. cos2θ - sin2θcos2θ + sin2θ = 2 tanθtan2θ + 1, जहाँ 0 < θ < π2 है। उपरोक्त में से कौन-सा/से कथन सर्वसमिका (identity) है/हैं?
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- 1न तो 1 और न ही 2
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