- Question: The value of cos 0° cos 1° cos 2° cos 3° … cos 89° cos 90° is.
(a) 1
(b) -1
(c) 0
(d) None
- Explanation:
- Question: Three circles touch each other externally. The distance between their centers is 5 cm, 6 cm and 7 cm. Find the radii of the circles.
(a) 2 cm, 3 cm, 4 cm
(b) 1 cm, 2 cm, 4 cm
(c) 1 cm, 2.5 cm, 3.5 cm
(d) 3 cm, 4 cm, 1 cm
- Explanation:
- Question: A point P is 13 cm from the Centre of a circle. The length of the tangent drawn from P to the circle is 12 cm. Find the radius of the circle.
(a) 5 cm
(b) 7 cm
(c) 10 cm
(d) 12 cm
- Explanation:
- Question: Consider point A on the circle of radius 7/π cm. A ball on point A moves along the circumference until it reaches point B. The tangent at B is parallel to the tangent at A. What is the distance travelled by the ball? (Consider the ball to be a point object).
(a) 3.5 cm
(b) 7 cm
(c) 14cm/
(d) 28 cm
- Explanation:
- Question: A pendulum swings through an angle of 30° and describes an arc 8.8 cm in length. Find the length of the pendulum in cm.
(a) 16.8 cm
(b) 17.3 cm
(c) 15.1 cm
(d) 14.5 cm
Explanation: