B. 45° / 45°
ExplanationStep 1: Check standard trigonometric values. Step 2: tan45° = 1 so θ = 45°. Step 3: At 45° sin and cos are equal.
Step 1: Standard trigonometric values देखें। Step 2: tan45° = 1 होता है इसलिए θ = 45° है। Step 3: 45° पर sin और cos बराबर होते हैं।
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