Question

If x = a sec 0 + b tan 0 and y = a tan 0+b sec 0, prove that
(x² - y²) = (a? – 62)



(Urgent) plz tell me answer in details.



class - X​

Answer 1

Step-by-step explanation:

We will be using the formulas:

i)

$(a + b) {}^{2} = a {}^{2} + b {}^{2} + 2ab$

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