engineering recuitment UPSSSC Assistant Boring Technician 2022 Mock Test Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
(cos18° cos42° cos78°) × (sin12° sin48° sin72°)-1 का मान ज्ञात कीजिए।
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(cos18° cos42° cos78°) × (sin12° sin48° sin72°)-1 का मान ज्ञात कीजिए।