If x=2sinƟ and y=2cosƟ, and sinƟcosƟ=2 then find (x+y)
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Answer:
20
Step-by-step explanation:
(x+y)²
(2sinƟ+2cosƟ)²
4sin²Ɵ+4cos²Ɵ+8(sinƟ.cosƟ)
4(sin²Ɵ+cos²Ɵ)+8(2)
4+16
20
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