It's math 10

Lessy 3. Show that the sine ratio, cosine ratio, and tangent ratio can each be used to determine the measure of angle y, to the nearest tenth of a degree, in the following triangle. 73 km 56 km 48 km 4. Look at the table in Lesson 3.2 that shows the tangent, sine, and cosine ratio values for various angles. Notice that sin 5' = cos 85', sin 10' = cos 80', sin 15 = cos 75, etc. a. What do the angles in each of the equalities add to? b. Use the following triangle to explain the equalities. (Hint: What fraction represents both sin 15 and cos 75 in the diagram?) 114 75 30 15 110