 # CBSE [Delhi]_X_Mathematics_2013_Set I

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• Q1 Marks:1

Option C is the correct answer. • Q2  Marks:1

Option B is the correct answer.  • Q3

In figure, a circle with centre O is inscribed in a quadrilateral ABCD such that, it touches the sides BC, AB, AD and CD at points P, Q, R and S respectively. If AB=29cm, AD=23cm, B=90° and DS= 5cm, then the radius of the circle (in cm.) is:

(A)    11                                 (B) 18
(C) 6                                    (D) 15 Marks:1

Option A is the correct answer.

Given:
AB, BC, CD and AD are tangents to the circle with centre O at Q, P, S and R respectively.

AB = 29 cm, AD = 23, DS = 5 cm and B = 90°

Construction: Join PQ.  • Q4

The angle of depression of a car, standing on the ground, from the top of a 75m high tower, is 30°. The distance of the car from the base of the tower (in m.) is:
(A)
25 3
(B)
50 3
(C)
75 3
(D) 150

Marks:1

Option C is the correct answer.  • Q5 Marks:1

Option A is the correct answer. • Q6 Marks:1

Option C is the correct answer. • Q7  Marks:1

Option C is the correct answer.  • Q8 Marks:1

Option B is the correct answer. • Q9 Marks:2  