An escalator in a department store is to carry people a vertical distance of20feet between floors. How long is the escalator if it makes an angle of 30with the ground?

2) find the remaining sides of a 30-60-90 triangle if the longest side is 11?

3) consider the right triangle ABC with C =90 if side a = 8, c=17 find b ?

4) find the remaining sides of a 30-60-90 triangle if the longest side is 8sqrt2?

5) An isoceles triangle in which two lengths are equal in length. the angle with two equal sides is called is vertex angle while the other two are called base angles ? if the vertx angle is 40 and what are the base angles?