B. 1/2 / 1/2
ExplanationStep 1: Check the standard value table. Step 2: cos 60° = 1/2. Step 3: Both sin 30° and cos 60° have value 1/2.
Step 1: Standard value table देखें। Step 2: cos 60° = 1/2 होता है। Step 3: sin 30° और cos 60° दोनों का value 1/2 होता है।
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