AP EAMCET · Maths · Trigonometric Ratios & Identities
If , then is equal to
- A
- B
- C
- D
Answer & Solution
Correct Answer
(B)
Step-by-step Solution
Detailed explanation
We know that, cosh2x-sinh2x=1 Given, sinhu=tanθ ⇒cosh2u-tan2θ=1 ⇒cosh2u=1+tan2θ=sec2θ ⇒coshu=secθ
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