TS EAMCET · Maths · Trigonometric Ratios & Identities
If \(A\) does not belong to the first quadrant, \(B\) does not belong to the second quadrant, \(\sin A=\frac{11}{61}\) and \(\cos B=\frac{-7}{25}\), then \(A-B\) and \(A+B\) lie respectively in the quadrants
- A 1,2
- B 2,3
- C 3,4
- D 4,1
Answer & Solution
Correct Answer
(D) 4,1
Step-by-step Solution
Detailed explanation
Given, \(\sin A=\frac{11}{61} A\) lies in 2 nd quadrant \(\cos B=\frac{-7}{25} B\) lies in 3rd quadrant \(\cos A=\frac{-60}{61}\) and \(\sin B=\frac{-24}{25}\) \(\because \sin (A-B)=\sin A \cos B-\cos A \sin B\)…
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