http://www.ck12.org Chapter 4. Basic Triangle Trigonometry
- Draw a picture of this situation.
- What methods or techniques will you use?
- Solve the problem.
A boat travels 6 miles NW and then 2 miles SW. You want to know how far away the boat is from its starting point. - Draw a picture of this situation.
- What methods or techniques will you use?
- Solve the problem.
You want to figure out the height of a building. From pointA, you measure an angle of elevation to the top of the
building to beα= 10 ◦. You move 50 feet closer to the building to pointBand find that the angle to the top of the
building is nowβ= 60 ◦. - Draw a picture of this situation.
- What methods or techniques will you use?
- Solve the problem.
- Given∆ABCwithA= 40 ◦,C= 65 ◦andb= 8 in, what isa?
- Given∆ABCwithA=π 3 radians,C=π 8 radiansandb= 12 inwhat isa?
- Given∆ABCwithA=π 6 radians,C=π 4 radiansandb= 20 inwhat isa?
The relationship between the sides and angles of all kinds of triangles were explored though the use of the six basic
trigonometric functions.