Question

x=rcos , y =rsin theta​

Answer 1

Answer:

full question.......... ......

Answer 2

Answer:r^2

Step-by-step explanation: x² + y² =( r cos θ)² + ( r sin θ)²

⇒r²cos²θ + r²sin²θ = r²(cos²θ + sin²θ)

⇒r²×1 = r²