1.

If x=asecthetacostheta,y=bsecthetasinthetaandz=thetatantheta, then find the value of (x^(2))/(a^(2))+(y^(2))/(b^(2))-(z^(2))/(c^(2))

Answer»

a) 1
b) `-10`
C) 0
d) 2

Answer :A


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