Here's the problem:
2cos x + tan x= sec x
I changed the tan x into sin x/cos x
I changed the sec x into 1/cos x
Then I multiplied by cos x and then I factored. I got (2sin x + 3)(3sin x-1)=0
sin x = -3/2 and sin x = 1
But that's not the answer on the answer sheet. What did I do wrong?