Question

Q 13. If x=2sin2Ɵ
. and y=2cos2Ɵ+1, then find x+y
$x = 2 { \sin }^{2} Ɵ \: \\ y = 2 {cos}^{2}Ɵ + 1 \\ now \\ x + y = 2 {sin}^{2} Ɵ + 2 {cos}^{2} Ɵ + 1 \\ = > 2(1 - {cos}^{2} Ɵ) + 2 {cos}^{2} Ɵ + 1 \\ 2 - 2 {cos}^{2} Ɵ + 2 {cos}^{2} Ɵ + 1 = > 2 + 1 \\ = > 3$ ​

Answer 1

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thanks a lot bro you have helped us so much in mathematics improvement is liked to meet you and learn mathematics

all the best bro bye k.

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Answer 2

Answer:

HAMHARA mummy papa mar chuka hai covid me. we are alone. or mujhhe sab samhal a par raha hai