MCQ
What is the value of cot (-870°)?
- A$3$
- B$\frac{1}{\sqrt{3}}$
- C$-\sqrt{3}$
- D$\frac{-1}{\sqrt{3}}$
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lf the lines 2x - 3y = 5 and 3x - 4y = 7 are two diameters of a circle of radius 7 then the equation of the circle is: