If a ladder of length 2 meters leans against a wall and makes 30 degree with the floor, how high above the floor does the ladder reach on the wall.

Question

No more Information, please just help me to solve it, thank you.

Answer 1

1/2=sin30=opp/hyp=opp/2, so opp=2/2=1, and opp is the height of the top of the ladder on the wall. So this height is 1m.