10th Grade GeometryBy Melissa Inforna

Table of ContentsWelcomeSetting up your calculator Basic parts of a right triangleAngles and Sides of a right triangleWelcome to SohCahToaFinding the ratioMission #1Mission #2Mission #3Credits

Welcome!Congratulations! You have made it to a new

area of math; Right Triangle Trigonometry. You and your partner are about to explore the beginnings of the trigonometric functions! Please follow this WebQuest page by page in order to get the full understanding of this topic. Enjoy!

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Setting up your CalculatorIn order to use your calculator you must first

tell it what you are going to be doing. Please follow these steps:Turn calculator onHit ModeGo to where it says Radian DegreePut your cursor on DegreeHit EnterHit 2nd Quit

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Basic parts of a Right TriangleThere are 2 legs and

a hypotenuseThe legs meet at the

right angleThe hypotenuse is

the longest side and is always across from the right angle

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Leg

Leg

Hypotenuse

Angles and Sides of a Right TriangleAngles are

represented by uppercase letters

Sides are represented by lowercase letters

The angle’s side is always opposite that angle. Ex: Angle A has side a opposite it.

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A

aB

b

C

c

Welcome to SohCahToaSohCahToa stands for:

Take the first letter of the trig function and the first letter of the sides of the ratio.

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Adjacent

OppositeTan

Hypotenuse

AdjacentCos

Hypotenuse

OppositeSin

Finding the RatioUsing the triangle at

the right we are going to fill in the following values:

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4

35

45

3

A

OTanA

H

ACosA

H

OSinA

A

BC3

45

Mission #1Using the Triangle on the previous slide

complete the following mission:Find the Sin, Cos, and Tan of Angle B

Previous Slide: Click Here

This is to be completed on a separate sheet of paper and shown to me before you continue!!

Mission #2Congratulations you have successfully

completed your first mission! Your second mission is as follows:Go to Mission 2 Final Project.docComplete this ditto on a separate sheet of

paper showing all work! Hand in to me when completed

Mission #3This is to be done INDEPENDENTLY!!This is to be taken at the desk in the library

away from the computers!Print out this Exit Slip, complete and hand in

for a quiz grade.

Exit Slip : Click Here

CreditsDitto for Mission 2:

http://www.edhelper.com/math/trigonometry9.htm