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Find dydxdydx, if : x = sinθ, y = tanθ - Mathematics and Statistics

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Question

Find `"dy"/"dx"`, if : x = sinθ, y = tanθ

Sum
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Solution

x = sinθ, y = tanθ
Differentiating x and y w.r.t. x, we get
`"dx"/"dθ" = "d"/"dθ"(sinθ)` = cosθ
and 
`"dy"/"dθ" = "d"/"dθ"(tanθ)` = sec2θ

`"dy"/"dx" = (("dy"/"dθ"))/(("dx"/"dθ")`

= `sec^2θ/cosθ`
= sec3θ.

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Chapter 1: Differentiation - Exercise 1.4 [Page 48]

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