Question
Find the difference between angle and its complement if
the angle is three-seventh of its complement.Solution
Let the angle be 'A'.
Complement of 'A' = 90° - A
So, 'A' = (3/7) X (90° - A)
Or, 7A = 270° - 3A
Or, 10A = 270°
Or, 'A' = 27°
Complement of 'A' = 90° - 27° = 63°
Required difference = 63° - 27° = 36°
Hence, option d.
Find the value of: {(78/4) + (15/6)} ÷ 2 - 6
The radius of a cylinder is 3 cm and its height is 10 cm. What is its total surface area?
A car travels 60 km at a speed of 30 km/hr, then 90 km at a speed of 45 km/hr, and finally 80 km at a speed of 40 km/hr. Find the average speed of the c...
A car covers a distance of 450 km at a constant speed. If the car’s speed had been 15 km/h faster, it would have taken 1 hour less to cover the same d...
In a circle, two chords AB and CD intersect inside the circle at P. If AP = 4 cm, PB = 6 cm, CP = 5 cm, and PD = x cm, what is the value of x?
If sinθ = 3/5 and θ is an acute angle, find cos θ.
Which computer part is responsible for storing data permanently, even when the power is turned off?
A cylinder of radius 12 cm containing water reduces its water level by 1 cm when a fully immersed hemi spherical ball is removed from this cylindrical c...
A ladder leaning against a wall makes an angle of 60° with the ground. If the ladder is 10 meters long, how high up the wall does it reach?
'P' sold an item at a profit of 40%. If the cost price of the item had been Rs. 150 less and its selling price had been Rs. 30 mo...
Relevant for Exams:
