defence exam DGAFMS Group C 2025 Mock Test Series Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities

यदि sec 4A = cosec (3A - 50°) है, जहाँ 4A और 3A न्यून कोण हैं, तो cosec (A + 25°) का मान ज्ञात कीजिए।

1
0
2
1/√2
3
1
4
√2
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