CBSE Class 10 Answered
IF xsin3A + ycos3A = sinA*cosA
& xsinA = ycosA
Prove x2 + y2 = 1
If xcosA/a + ysinA/b = 1
& xsinA/a -ycosA/b = 1
Prove x2/a2 + y2/b2 = 2
Asked by Shreyash.98rana | 18 Aug, 2014, 01:26: PM
Expert Answer
Answered by Vimala Ramamurthy | 18 Aug, 2014, 04:46: PM
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