Teaching DSSSB PGT Mock Test 2025 Mathematics Trigonometry Trigonometric Functions

यदि y = tanx.tan2x.tan3x हो तो \(\frac{dy}{dx}\) का मान ज्ञात कीजिए।

1
 3sec23x - 2sec22x 
2
 2sec22x - sec2x
3
 3sin23x - 2sin22x -sin2x
4
 3sec23x - 2sec22x - sec2x
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