September 19, 2011
Monday September 19th (red)
Tuesday September 20th (blue)
Warm up angles/ reference angles/coterminals
return ONQ
Homework Questions?
Another problem
Worksheet review for assessment #2
Wednesday September 21st 2011
September 19, 2011
The second hand is 10 inches long and it is on the 3.
a. Draw a picture of this scenario
b. The second hand moves for 75 seconds. What angle has it
produced with its initial location?
c. What is the arc length formed between it original location
and its terminal location?
d. What is the area of the sector formed between it original
location and its terminal location?
September 19, 2011
September 19, 2011
Draw the following angles in standard position.
a. 13π/4
b. -25π/7
Draw in the reference angle.
Determine the reference angle in radians.
Determine all of the co-terminal angles -2π < θ < 2π
September 19, 2011
September 19, 2011
September 19, 2011
September 19, 2011
In
order for a lawn mower blade to cut grass it
must strike the grass with a speed of at least 900
inches per second.
a. If the innermost part of the cutting edge is 6
inches from the center of the blade, how many
radians per second must the blade turn?
b. How many revolutions per second is this?
*c. The blade has a diameter of 19 inches. If the
outer most tip of the blade hits a rock while
turning as in part (a) how fast could the rock be
hurled from the mower?
September 19, 2011
September 19, 2011
September 19, 2011