Let A and B denote the statements array l A: + + =0 B: x+ + =0 array If ( - )+ ( - )+ ( …
Mathematics · JEE Main · NTA Exams — Trigonometry
Let A and B denote the statements
\(\begin{array}{l} A: \cos \pi+\cos \beta+\cos \gamma=0\\ B: \sin x+\sin \beta+\sin \gamma=0 \end{array}\)
If \(\cos (\beta-\gamma)+\cos (\gamma-\pi)+\cos (\pi-\beta)=-\frac{3}{2}\), then
- A is true and B is false
- A is false and B is true
- Both A and B are true
- Both A and B are false
Answer
(C) Both A and B are true
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