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
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