TS EAMCET · Maths · Trigonometric Ratios & Identities
If and are acute angles, and then
- A
- B
- C
- D
Answer & Solution
Correct Answer
(A)
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
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