1.

If x = a cosθ+ b sinθ and y = b cosθ- a sinθ, then $x^{2}+y^{2}$ is equal to1). ab2). $a^{2}+b^{2}$3). $a^{2}-b^{2}$4). 1

Answer»

is $a^{2}+B^{2}$ is the CORRECT ANSWER?? am i RIGHT?



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