A. (√6 + √2)/4 / (√6 + √2)/4
ExplanationStep 1: Write 75° as 45° + 30°. Step 2: Using sin(a+b) gives (√6 + √2)/4. Step 3: Remember exact values of 15° and 75° using angle addition formulas.
Step 1: 75° को 45° + 30° लिखें। Step 2: sin(a+b) formula से value (√6 + √2)/4 आती है। Step 3: 15° और 75° के exact values formula से याद रखें।
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