Class 10 Maths

If $ \triangle ABC \sim \triangle DEF $ and $ \angle A = 47^{\circ}, \angle E = 83^{\circ} $
The pair of linear equations x + 2y + 5 = 0 and −3x − 6y + 1 = 0 has
Which of the following cannot be the probability of an event?
If $ p(x) = x^2 + 5x + 6 $, then p (−2) is
The number $ 5 - 3\sqrt{5} + \sqrt{5} $ is
If the radius of a semi-circular protractor is 7 cm, then its perimeter is
(HCF × LCM) for the numbers 70 and 40 is
A quadratic polynomial the sum and product of whose zeroes are -3 and 2 respectively, is
The following distribution gives the daily income of 50 workers of a factory
The mean of the following distribution is 18. Find the frequency f of the class 19 - 21
As observed from the top of a 100 m high light house
The diameters of the lower and upper ends of a bucket in the form of a frustum of a
Prove that: $ \frac{\sin A - 2 \sin^3 A} {2 \cos^3 A – \cos A} = \tan A $
In an equilateral $\triangle$ ABC, D is a point on side BC such that BD
A train travels at a certain average speed for a distance of 63 km and then travels at a distance of 72 km
A motor boat whose speed is 18 km/hr in still water takes 1hr more to go 24 km
A heap of rice is in the form of a cone of base diameter 24 m and height 3.5 m
A wooden article was made by scooping out a hemisphere from each end of a solid
Find the area of the shaded region in Fig. 2, where arcs drawn with centres A, B, C and D intersect in pairs at mid-points
If tan 2A = cot (A - 18°), where 2A is an acute angle, find the value of A