TS EAMCET · Maths · Trigonometric Ratios & Identities
If and then
- A
- B
- C
- D
Answer & Solution
Correct Answer
(D)
Step-by-step Solution
Detailed explanation
Given, 90°<A<180° sinA=45 sinA=2tanA21+tan2A2 45=2tanA21+tan2A2 4tan2A2-10tanA2+4=0 2tan2A2-5tanA2+2=0 2tan2A2-4tanA2-tanA2+2=0 2tanA2tanA2-2-1tanA2-2=0 tanA2-22tanA2-1=0 tanA2=1 2 is not possible in the given interval Hence, tanA2=2
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