Question

The expression cosx + tanx sinx can be simplified to _____.

A. cosx sinx
B. secx
C. cotx
D. cscx

Answer 1

tan(x) = sin(x)/cos(x)

Common Denominator.

Numerator should be interesting.

Answer 2

is it B

Answer 3

You tell me. How did you conclude that?

Answer 4

yes, B.\[cosx +tanxsinx= cosx + \frac{ sinx }{ cosx }(sinx)=cosx + \frac{ \sin^2x }{ cosx }=\frac{ \cos^2x+\sin^x }{ cosx }=\frac{ 1 }{ cosx }=secx\]

Answer 5

{sigh}