Question

Simplify the expression;
tan(-x) cos(-x)=?

Answer 1

convert tan into sin and cos

Answer 2

idk how

Answer 3

\(tanx=\Large\frac{sinx}{cosx}\)

Answer 4

what is cos(-x)=?

Answer 5

i still don't know what to do.

Answer 6

I don't understand how to do any of this.

Answer 7

do you know what is cos(-x) =?

Answer 8

look at thin link Trigonometry Basic: http://openstudy.com/study#/updates/553f1223e4b061e2642b5eb6

Answer 9

cos(-x) = cos(x)
sin(-x) = - sin(x)

Answer 10

k

Answer 11

can someone please help me? I don't understand any of this.

Answer 12

convert tanx into sin and cos

Answer 13

\[\Large \tan(-x)\cos(-x)-->\frac{ \sin(-x) }{\cos(-x) }\cos(-x)\]

Answer 14

@perl @Data_LG2 please help

Answer 15

@andreaevelynn can you tell us which part of rvc's explanation you did not understand so that we can explain it to you better?

Answer 16

@andreaevelynn u here?