Solving Trigonometric Equations (a third time)

A review of the compound angle formulas, the double angle formulas and the Pythagorean identity.

All the following questions required to find theta (or x or the angle) between 0 radians and 2pi radians.

First a linear example.

Solving Trigonometric Equations ( a second time)

Revisiting how to solve a trigonometric equation.

Some examples where we get a linear equation to solve:
This won starts with a reciprocal trigonometric function



 

War with Radians

A little review of radians and a review of the special triangles from last year only this year with radians.

 

Experiencing Radians with a Ruler

Students were given the following to do.

1.    Work in pairs.  Pick up 1 piece of cardboard, a circle template, 1 piece of paper tape (about 1 meter in length), and a pair of scissors.     

2.    Cut out a perfect circle.  Wrap the tape around the circle.  Allow the tape to overlap.  Your partner will now cut through the overlap section with the scissors so that the ends just meet.   
       Question:  What measurement of the circle does this cut length of tape represent?                       _
3.    Fold the cardboard circle in four equal sections by folding in half, then in half again.