CBSE Class 11-science Answered
1.cot4x(sin5x + sin3x)=cotx(sin5x -sin3x).
2.prove that sin 18degree =square root 5 -1/4 and hence prove cos36 degree =square root 5 + 1/4 using multiple angle formulae.
3. find the general solution of -1greaterb than or equal to k smaller than or equal to 1.
Asked by Subiya Khan | 11 Oct, 2013, 05:38: PM
Expert Answer
Answered by Vimala Ramamurthy | 12 Oct, 2013, 07:36: AM
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