Quantitative Aptitude
A can do a work in 4 days and B in 12 days. If they work on it together for 2 days, then the fraction of the work that will be left is:
\( \frac{1}{5} \)
\( \frac{2}{5} \)
\( \frac{2}{3} \)
\( \frac{1}{3} \)
Two circles touch each other externally at P. AB is a direct common tangent to the two circles. If A and B are points of contact and ∠PAB = 65°, then ∠ABP is _________:
Using \(
\cot(A - B) = \frac{\cot A \cot B + 1}{\cot B - \cot A},
\) find the value of cot15°
\( \sqrt{3} - 1 \)
\( 2 + \sqrt{3} \)
\( \sqrt{3} + 1 \)
\( 2 - \sqrt{3} \)