http://mathcentre.ac.uk/resources/uploaded/mc-ty-trig-2009-1.pdf WebSec θ + tan θ = P. ⇒ `1/cos θ + sin θ /cos θ = P` ⇒ `(1 + sin θ)/cos θ = P` ⇒ `(1 + sin θ)^2/cos^2 θ = P^2`, ....(Squaring both sides)
If X = a Sec θ and Y = B Tan θ, Then B2x2 − A2y2 = - Mathematics
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