Question

How do you find side AB? Don't give me the answer just the formula to find it please, I need to learn on my own.

Answer 1

use the tnagent ratio

Answer 2

use trignometric ratios tanX

Answer 3

So... 20/tan55?

Answer 4

tan = opp / adj

so, AB = 20 * tan(55 degrees)

Answer 5

How did you get that?

Answer 6

Why do you multiply instead of divide?

Answer 7

\[
\tan55^\circ ={AB\over BC}
\]

Answer 8

I see, thank you very much!!

Answer 9

yw