Teaching NVS Junior Secretariat Assistant (JSA) Mock Test 2024 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
\(\frac{\sin ^2 39^{\circ}+\sin ^2\left(90^{\circ}-39^{\circ}\right)}{\cos ^2 35^{\circ}+\cos ^2\left(90^{\circ}-35^{\circ}\right)}\) + 3 tan 25° tan 65° এর মান নির্ণয় করো:
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