B. 1 / 1
ExplanationStep 1: Check standard angle values. Step 2: cos0° = 1 and sin0° = 0 so the sum is 1. Step 3: At 0° remember cos is 1 and sin is 0.
Step 1: Standard angle values देखें। Step 2: cos0° = 1 और sin0° = 0 इसलिए sum 1 है। Step 3: 0° पर cos 1 और sin 0 याद रखें।
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