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TS EAMCET · Maths · Trigonometric Equations

2coshx+ysinhx-y+sinh2y=

  1. A sinh 2x
  2. B sinh2x+sinh2y2
  3. C sinh2x-sinh2y2
  4. D cosh2x
Verified Solution

Answer & Solution

Correct Answer

(A) sinh 2x

Step-by-step Solution

Detailed explanation

Given: A=2coshx+ysinhx-y+sinh2y ⇒A=2ex+y+e-x-y2ex-y-e-x+y2+e2y-e-2y2 ⇒A=e2x-e2y+e-2y-e-2x2+e2y-e-2y2 ⇒A=e2x-e-2x2 ⇒A=sinh2x