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CBSE Important Questions

CBSE Guess > Papers > Important Questions > Class XI > 2010 > Maths > Maths By Mr. Anil Kumar Tondak

CBSE CLASS XI

Trigonometric Functions

Q.1. Find the degree measure corresponding to the following radian measures (Usep = 22/7):

(i)

(ii) -3)c

(iii) 11c

Q.2. Find the radian measure corresponding to the following degree measures:
(i) -300° (ii) 7° 30° (iii) 125° 30°

Q.3. Find the values of the following trigonometric ratios:

(i) sin

(ii) sin 3060°

(iii) cosec (-1200°)

(iv) tan (-585°)

(v) sin 4530° sin

Q.4. Find the value of tan.

Q.5. Find the value of tan.

Q.6. Find tan150 and hence show that tan150 + cot150 = 4.

Q.7. Evaluate: sin 130° Cos 110° + Cos 130° sin 110°

Q.8. Find the value of .

Q.9. Show that:
cosec3,.

Q.10. Prove that: tan 560 =

Q.11. Prove: tan150 + tan300 + tan150.tan300 = 1.

Q.12. Prove that:

Q.13. In a right triangle, the difference between two acute angles is p/18. Express the angles in degrees.

Q.14. The minute hand of a watch is 1.5 cm long. How far does its tip move in 40 minutes.


Paper By Mr. Anil Kumar Tondak
Email Id : [email protected]
Ph No.: 9811363962