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TS EAMCET · Maths · Inverse Trigonometric Functions

coth-1(2)+cosech-1(-22)=

  1. A log32
  2. B log6
  3. C log32
  4. D log32
Verified Solution

Answer & Solution

Correct Answer

(A) log32

Step-by-step Solution

Detailed explanation

Given, coth-1(2)+cosech-1(-22)=coth-1(2)-cosech-1(22) coth-12=12log2+12-1=12log3=log3 (As coth-1x=12logx+1x-1) cosech-122=log1+222+122=log422=log2 (As cosech-1x=log1+x2+1x) ⇒coth-1(2)-cosech-1(22)=log3-log2=log32