C. 1 / 1
ExplanationStep 1: Look at the standard trigonometric values. Step 2: tan 45° = 1 so option C is correct. Step 3: At 45° sin and cos are equal so tan becomes 1.
Step 1: Standard trigonometric values में tan 45° देखें। Step 2: tan 45° = 1 होता है इसलिए option C सही है। Step 3: 45° पर sin और cos बराबर होते हैं इसलिए tan 1 बनता है।
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