Mathematics · Trigonometry
त्रिकोणमितीय व्यंजक cos2θ - 1, जहाँ 0° < θ < 90° है, निम्नलिखित में से किसके बराबर है?
Verified Solution4 OptionsUpdated: October 2026👁️1 View
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- 1-sec2θ
- 2sec2θ
- 3-sin2θ✓
- 4cos2θ
सही उत्तर देखें
-sin2θ
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