state gov RPSC 2nd Grade Senior Teacher Mock Test Series 2025 Quantitative Aptitude Trigonometry Trigonometric Ratios and Identities
यदि θ एक न्यून कोण है, तो हर D ज्ञात करें जब
(cot θ - cosec θ)2 = \(\frac{1 - \cos θ}{D}\)
1
1 + sin θ
2
-sin θ - 1
3
-1 - cos θ
4
1 + cos θ
5
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