Question
If angle between two sides of 3 cm & 2 cm of a triangle
is 30°. what is the area of the triangle ?Solution
Area of the triangle = 1/2 X a X b X Sin θ where ɵ is the angle between two sided a & b of the triangle; So Area of the triangle = 1/2 X a X b X Sin θ = 1/2 X a X b X sin 300 = 1/2 X 3 X 2 X 1/2 = 3/2 cm2
- Two cars ‘X’ and ‘Y’ start from cities ‘M’ and ‘N’ respectively towards each other at the same time. The distance between cities ‘M’ an...
A train takes 46 seconds to cross the 214 m long bridge. If the same train takes 23 seconds to cross a signal board, tell the length of the train. (In m...
Amrita traveled a certain distance, covering 50% of it at a speed of 15 km/h, then 40% of the remaining distance at 7.5 km/h, and the rest at 9 km/h. If...
The speed of a bike increases by 5 km/hr after every 1 hour. If the distance travelled by the bike in 1st hour is 10 km, the find the total distance tra...
A vehicle was scheduled to complete a 360 km journey in 6 hours. For the initial 4 hours, it maintained a steady speed of 56 km/h. At what minimum speed...
A train covers a certain distance at a speed of 24 km/h and the next same distance with a speed of 30 km/h and the next same distance with a speed of 40...
A and B can complete a work in 20 and 30 days, respectively. If they work together for 10 days and then A leaves, how many more days will B take to fini...
A boy goes to school with a speed of 75 km/h and comes back with a speed of 45 km/h. find his average speed?
Aman takes 2 hours to bike from point 'M' to point 'N' at a speed of 25 km/h. He then increases his speed by 80% and takes 3 hours to reach point 'O' fr...
The speed of two cars A and B are in the ratio of 10:13 respectively. Car A travels 18 km less than the car B in the same time duration. What was the di...