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TS EAMCET · Maths · Trigonometric Ratios & Identities

If A and BA>B are acute angles, sinA-B=1665 and sinB=513 then tanA+cotA=

  1. A 714025342732
  2. B 714025342733
  3. C 714025342722
  4. D 714015342732
Verified Solution

Answer & Solution

Correct Answer

(A) 714025342732

Step-by-step Solution

Detailed explanation

Given: sinB=513⇒tanB=512 Now, sinA-B=1665 ⇒tanA-B=1663 ⇒tanA-tanB1+tanAtanB=1663 ⇒tanA-5121+5tanA12=1663 ⇒12tanA-512+5tanA=1663 ⇒756tanA-315=192+80tanA ⇒676tanA=507 ⇒tanA=507676 So, tanA+cotA=507676+676507=714025342732