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ExplanationStep 1: This is a basic trigonometric identity. Step 2: sin²θ + cos²θ is always 1. Step 3: This formula is very useful in identity based questions.
Step 1: यह basic trigonometric identity है। Step 2: sin²θ + cos²θ हमेशा 1 होता है। Step 3: Identity based questions में यह formula बहुत उपयोगी है।
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