B. √3/2 / √3/2
ExplanationStep 1: Recall the standard value table. Step 2: cos 30° = √3/2. Step 3: sin 60° and cos 30° are equal.
Step 1: Standard values की table याद करें। Step 2: cos 30° = √3/2 होता है। Step 3: sin 60° और cos 30° दोनों बराबर होते हैं।
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