A vertical pole 12.8m high casts a shadow 56.1m long. What is the inclination of the sun.

Trigonometry is all about using the equations that you know to solve for the unknown. Here you are given the lengths of two of the sides of a right triangle, and asked for one of the angles. Which two sides were you given? Base? Opposite? Hypotenuse? Which angle are they asking for?

Start by drawing the triangle, then figuring out which trigonometric function to use.

Find the following trig ratios. Express your answer to four places of a degree.

a)sin 25 b)sin 155 c)tan 60 d)cos 45