CBSE Guess > Papers > Important Questions > Class XI > 2010 > Maths > Maths By Mr. Anil Kumar Tondak
CBSE CLASS XI
Q. 33. Prove: (i) 
.
(ii) 
Q. 34. If tanx = 2 tany, Prove that: 
.
Q. 35. Prove that : a. 
= 2 cos, 0<x<
Q. 36. Prove that :
(i) 
(ii) 
(iii) 
(iv) 
(v) 
(vi) 
(vii) 
(viii) 
(ix) 
Q. 37. Prove:
(i) 
(ii) 
(iii) 
(iv) tan
= tanx + secx
(v) 
= 4 cos2x.cos4x
Paper By Mr. Anil Kumar Tondak
Email Id : anil_tondak@yahoo.com
Ph No.: 9811363962
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