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If Sec2 θ (1 + Sin θ) (1 − Sin θ) = K, Then Find the Value of K.

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Question

If sec2 θ (1 + sin θ) (1 − sin θ) = k, then find the value of k.

Sum
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Solution

Given:

`sec^2θ {(1+sinθ) (1-sin θ)}=k` 

⇒ `sec^2θ {(1+sinθ) (1-sin θ)}=k`  

⇒` Sec^2θ {1+sinθ}=K` 

⇒ `sec^2θ  cos^2θ=k` 

⇒` 1/cos^2θ xx cos ^2 θ=k` 

⇒ `1=k`

⇒` k=1` 

Hence, the value of k is 1. 

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Chapter 11: Trigonometric Identities - Exercise 11.3 [Page 55]

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R.D. Sharma Mathematics [English] Class 10
Chapter 11 Trigonometric Identities
Exercise 11.3 | Q 19 | Page 55
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