Two cars travel from city A to city B at a speed of 30 and 45 km/hr respectively. If one car takes 2.5 hours lesser time than the other car for the journey,
then the distance between City A and City B is:
1). 270 km
2). 338 km
3). 180 km
4). 225 km
4. If secA/(secA - 1) + secA/(secA + 1) = x, then x is
5. If 2tan2θ = √12 and 0° < θ < 45°, then the value of sin2θ + √3cosθ - 4tan2θ is
6. What is the value of sec 30° + cot 30°?
7. If sin(A + B) = sin A cos B + cos A sin B, then the value of $sin 75^{0}$ is
9. If $x sin60^{0}.tan30^{0}$ = $sec60^{0}.cot45^{0}$ , then the value of x is