defence exam Coast Guard Navik GD (General Duty) 02/2025 Mock Test Series Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
निम्न का मान ज्ञात कीजिए:
tan72° + tan39° + tan69°
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tan72° tan39° tan69°
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Cot72° cot39° cot69°