Question

27. If x= p tan 0 + q sec 0 and y = p sec 0 + q tan 0 then prove that
x² - y² = 9² - p²
OR​

Answer 1

Step-by-step explanation:

X=psecθ+qtanθ and y=ptanθ +qsecθ ∴, x²=p²sec²θ+2pqsecθtanθ+q²tan²θ and y²=p²tan²θ+2pqtanθsecθ+q²sec²θ ∴, x²- ...