TS EAMCET · Maths · Trigonometric Ratios & Identities
If and then
- A
- B
- C
- D
Answer & Solution
Correct Answer
(C)
Step-by-step Solution
Detailed explanation
Given, sinx+siny=3cosy-cosx 2sinx+y2.cosx-y2=3×2sinx+y2.sinx-y2 cosx-y2=3×sinx-y2 tanx-y2=13 Now, tanx-y=2tanx-y21-tanx-y22 tanx-y=2×131-132 tanx-y=2×131-19 tanx-y=2×1389 tanx-y=34
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