Question

if x=p sec theta + q tan theta and y= p tan theta+ q sec theta ; prove that x²-y²=p²-q².​

Answer 1

Answer:

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

Answer 2

Answer:-

(321) + ( - 316)

=321-316

= 5

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