Question

Q. 13. If coordinates of P and Q are
(a cos e, b sin ) and (- a sin 0, b cos e)
respectively, then show that OP2 + 0Q2
al + b2, where O is origin.​

Answer 1

Answer:

If co-ordinates of P and Q are (acosθ,bsinθ) and (−asinθ,bcosθ) respectively , then show that ... P=(acosθ,bsinθ) Q=(−asinθ,bcosθ). 0 is the origin. ∴OP2+OQ2=[(0−acosθ)2+(0−bsinθ)2 ]2+[(0+acosθ)2+(0− bsinθ)2 ...