Question

xsin³theta + ycos³theta = sintheta. costheta
xsintheta -ycostheta =0
prove x² + y2 = 1​

Answer 1

Answer:

If x sin3|+ y cos3|=sin|cos| and xsin|=ycos|, prove x2+y2=1.

Answer:

Answer:

Here is ur answer dear:-

=> xsin³theta + ycos³theta= sintheta×costheta.

=> x.sin³theta + cos²theta.(ycostheta) = sintheta.costheta.

• [use xsintheta= ycostheta in above]

=> xsin³theta+ cos²theta× xsintheta= sintheta×costheta.

=> xsintheta( sin²theta + cos²theta) = sintheta×costheta.

=> xsintheta = sintheta×costheta.

=> x = costheta.

=> so, y = sintheta.

Hope it is correct

Step-by-step explanation: