SCR 5 Moving On!

5. Tape the cardstock protractor to the side of the paper tube so that 0 is down and 90 is towards the back. 6. Tie or tape a rock, washer, or nut to the end of a 12” piece of string. 7. Tape the other end of the string to the corner of the protractor so that it hangs down. 8. If the tube is horizonal, the string should be at 0. As the tube is angled up, the string will indicate the angle. 9. Test your instrument by measuring the angle to some tall object. Write down the angle. 10. Measure the distance from where you stood to take the measurement and directly below the object.

11. Look at the Table of Tangents to find the tangent ratio for the angle you measured.