Simplify (cos x)/(sec(x) + 1)

a. cot^2 x - cot^2 x * cos x
b. cot^2 x + cot^2 x * cos x
c. cos^2 x + cos x
d. cot^2 x - cot^2 x * sin x

1 answer

  1. multiply top and bottom by secx - 1 and you have
    = cosx(secx-1)/tan^2x
    = (1-cosx)/tan^2x
    see what you can make of that
    Not sure it's any "simpler" though

Answer this Question

Still need help?

You can ask a new question or browse more Math questions.