SSC IB Security Assistant & MTS Mock Test Series 2023 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
যদি \(\rm \sin \theta=\frac{5}{13}\) হয়, তাহলে \(\rm \frac{\cos^2 \theta-\sin^2 \theta}{2\cos \theta.\sin \theta}\) এর মান কত হবে ?
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115/126
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113/120
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117/136
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119/120