L3-A2-Trig River Worksheet
Trig River WorksheetYour distance from the zero edge marker: _____________ First pencil angle measured on the protractor: ____________ (degrees)Second pencil angle measured on the protractor: ____________ (degrees)Find the average of these two angle measurements: Add them together and divide by 2.(first angle) _______ + (second angle) _______ = _______ ÷ 2 = ________ (degrees)far edge markerzero edge marker protractoradjacentknown length (measured in Step 1)measured angle(from Step 4)hypotenuse ?? unknown lengthopposite?? unknown length?? unknown angleknown angle (90)tapeWhat we know so far:We know the length of the side adjacent to the measured angle, but we do not know the length of the side opposite the angle or the length of the hypotenuse.Which of the trigonometric functions use the side we know and the side we want to know in our “river”? Circle one: sin = opp cos= adj tan= opphyp hyp adjWhat is the tan of your measured angle (use a calculator or chart)? _________Now you have one unknown in your equation, and you can solve it!length of adjacent side x tan value of your angle = length of opposite side!________ x ________ = ?Write your answer here: ____________Congratulations, you are a math wizard! Now you know the width of the Trig River! ................
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