The sides of a triangle are 8, 15, and 17 units. If each side is doubled, how many square units will the are of the new triangle be?
A). 200
B). 240
C). 320
D). 420
2. If cot$(\frac{A}{2})$ = x, then the value of x is
3. If $tan(5x - 10^{0})$ = $cot(5y + 20^{0})$, the value of (x +y ) is
5. If cot 4A.cot 6A = 1 and A is positive acute angle, then find the value of (12 cos25A – 2) ?
7. In an isosceles trapezium _____.
8. If $tan2\theta. tan3\theta$ = 1, where $0^{0} < \theta < 90^{0}$ then the value of $\theta$ is