If 5x = sec θ and 5/x = tan θ, find the value of 5
Given: 5x = sec θ, and 5/x = tan θ
Consider 5(x2 – (1/ x2))
=
= (1/5) [sec2 θ – tan2 θ]
= (1/5)[1]
= 1/5 (∵ sec2 x – tan2 x = 1)