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12. If x = a cos 0 and y = b sine, then b2x2 + a’ya(a) a2 b2(b) ab(c)tb |
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Answer» (a) a2b2 Step-by-step EXPLANATION: X=acosθ;y=bsinθ cosθ= a x ;sinθ= b y
cos θ+sin 2 θ=1= a 2
x 2
+ b 2
y 2
x 2 b 2 +a 2 y 2 =a 2 b 2 . |
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