Precalculus question

Question

A 6m ladder leans against a vertical wall at an angle of 70º to the ground. What equation can be used to find the height the ladder reaches up the wall? 

I got cos70º = x/6, is that correct?

Answer 1

sin70 = x/6 where x= height the ladder reaches on the wall

x= 6sin70 = about 5.64 meters

cos70 =x/6 where x = distance of the bottom of the ladder to the bottom of the wall