1. The Tangent Ratio Date:________________ Name:___________________ a. Using a protractor draw a right triangle to scale with angle measures 20  & 70  Measure and label the length of each side to the nearest tenth of a centimeter. b. Find each trig ratio sin 20 =sin 70 = cos 20 =cos 70 = tan 20 = tan 70 = c.Using a calculator, convert your ratios about to decimal. Round to the nearest thousandth and record your results below. sin 20 =sin 70 = cos 20 =cos 70 = tan 20 = tan 70 = d.Use a calculator to find each value. Round to the nearest thousandth and record your results below. sin 20 =sin 70 = cos 20 =cos 70 = tan 20 = tan 70 = Do Now:

2. Gertie the gopher is looking at a tree that is 100 feet away from her hole. If the angle of elevation between Gertie’s hole and the top of the tree is 23°, how tall is the tree? 1.Find the measurement of the missing side of the triangle to the nearest tenth of a centimeter. a. b. 2.

3. Find the measurement of the missing side of the triangle to the nearest tenth of a centimeter in two different ways. From the top of a lighthouse 165 feet above the water the angle of depression of a ship is 13°. Find the distance from the ship to the light house 3. 4.

4. 6. Calculate m  J to the nearest degree 7a. Graph the line 2x +5y = 20 Find the measures of the angles of the triangle made by the line and the x- & y- axes in the first quadrant 5. Calculate m  A to the nearest degree b.