CBSE Guess > Papers > Important Questions > Class XI > 2010 > Maths > Maths By Mr. Anil Kumar Tondak
CBSE CLASS XI
Q.15. The minute hand of a clock is 10 cm long. How far does the tip of the hand move in 20 minutes?
Q.16. The angles of a quadrilateral are in A.P. and the greatest angle is 120°. Express the angles in radians.
Q.17. The angle of a triangle are in AP. The number of degrees in the least is to the number of radians in the greatest as 60: л. Find the angles in degrees.
Q.18. Find the angle in radian through which a pendulum swings if its length is 75 cm and the tip describes an arc of length 15 cm.
Q.19. The large hand of a big clock is 35cm long. How many cm does its tip move in 9 minutes?
Q.20. Find the difference between the two acute angles of a right angled triangle is 
radians.
Q.21. Express the angles in degrees the circular measure of the angle: 
.
Q.22. A wheel makes 360 revolutions per minute. Through how many radians does it turn in 1 second?
Q.23. A railway train is travelling on a circular curve of 1500 metres radius at the rate of 66 km/hr. Through what angle has it turned in 10 seconds?
Q.24.The radius of a circle is 30 cm. Find the length of an arc of this circle, if the length of the chord of a arc is 30 cm.
Q.25. If 5 sinx = 3. find value of 
Q.26. If tan A = x tan B, prove that : 
Q.27. If tanx = a/b, Show that: 
Q.28. Show that: (i) sina + sin(a + 
) + sin(a + 
) = 0
(ii)2cos
Q.29. If tan a = 
, show that a + b = 
Q.30. Simplify: 
Q.31 . Simplify: 
Q. 32. Prove: 
.
Paper By Mr. Anil Kumar Tondak
Email Id : [email protected]
Ph No.: 9811363962
