railway RRB Technician Grade 1 Mock Test 2024 Mathematics Trigonometry Trigonometric Identities

Cosθ - Sinθ = √2 Sinθ হলে, (Cosθ + Sinθ) এর মান নির্ণয় করুন।

1
Sinθ
2
√2Cosθ
3
2Cosθ
4
2Sinθ
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