TS EAMCET · Maths · Trigonometric Ratios & Identities
If and , then
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
Step-by-step Solution
Detailed explanation
Given: x=logcotπ4+θ ⇒x=logcotπ4+π12 ⇒x=logcotπ3 ⇒x=log13 ⇒ex=13 and e-x=3 Now, coshx=ex+e-x2 ⇒coshx=13+32 ⇒coshx=23
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