Mathematics Question and Answer for Exams

D and E are midpoints of side AB and AC respectively of the ΔABC. A line drawn from A meets BC at H and DE at K. AK : KH = ?

If each interior angle is doubled of each exterior angle of a regular polygon with n sides, then the value of n is 

The length of the two sides forming the right angle of a right-angled triangle are 6 cm and 8 cm, then find the length of its circum radius:

The sides of a triangle are in the ratio of 7: 9 : 12. The difference between the lengths of largest and smallest sides is 15 cm . The length of the largest sides would be: 

A ladder 20 m long is leaning against a vertical wall. It makes an angle of 30° with the ground. How high on the wall does the ladder reach?

A kite is flying at a height of 50m. If the length of string is 100m then the inclination of string to the horizontal ground in degree measures is:

One watch which gains uniformly is one minute slow at 1 pm on Tuesday and it is two minutes fast at 1 am on the following Friday. When had it shown the correct time?

At what time between 7 and 8 o'clock will the hands of a clock be in the same straight line but, not together?

If 1 + sin² A = 3 sin A cos A, then what are the possible values of tan A?

What is the value of $${\sqrt{1-cosA\over{1+cosA}}}$$?