sec(theta)cos(theta)=1
(1/cosØ)(cosØ) = 1
1 = 1
Your equation is an identity, so it is true for all values of Ø, except for those values of Ø which would make cosØ = 0
e.g Ø = ±π/2, ± 3π/2 , .... would not be allowed
How to find all solutions of the equation sec(theta)cos(theta)=1
1 answer