I am studying A level maths A2 in UK. So level is pre-University maths.
I have for example, this equation to solve for 0 <= x <= 360.
cosec x = sec x.
I am solving like this:
x = 45 and 225 degrees.
Then looking on a graph of sin and cos x to see where they intersect. Is that the way to do it? Or is there a more rigorous method? Is there an algebraic method?