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Complete Interactivity Lesson 13-5: The Cosine Function using the Exploration Guide
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Post a comment describing three things you learned about the cosine curve from this Interactivity.
Posts
15 years ago
12 comments:
The cosine curve is where the terminal side of that angle intersects in the unit circle.
wow i never knew that
thnx john blk 2
3 Things We Learn About In The Interactivity
-About The Graph Of A Cosine Function Is A Cosine Curve.
-How To Graph And Write A Cosine Function.
-Solving A Trigonometric Equations
shatoya and ronald
the main thing i learned about the cosine curve was the meaning of a cosine curve how to write one as well. but most of all how to solve a cosine curve problem if i need to.
mitchell
I learned that the maximum and the minimum are the same as the sine and that at 90 and 270 the cosine will be 0 and then at 0,360 the cosine will be 1 and then at 180 the cosine will be -1.
From seeing the cosine graphed, i noticed that it has a mountain/valley form. Also, I learned that the maximum and minimum of this and the sine graph is 1/-1. The Cosine graph intersects the X-axis at 90 and 270 degrees.
~Shane
ughh MS Lynch my head hurts...the grapgh parts are so confusing..well i hope i get it soon i dn't want to fail any test. Can you go over these graphs. ^-^
from the graphs i learned that when no unit is specified the angle is measured in radians, the cos of pi/2 and 3 pi/2 equals 0 and the cos of pi and 2 pi equals 1, and when a point in quad I is negative it is equal to the point in quad IV , negatives in quad II equal quad III, negatives in quad III equal quad II and negatives in quad IV equal quad I
Jessica
Noemi
We learned that the value of cosø equals 0 when ø equals 90˚ and 270˚. To include, we also learned how to determine ø=π.
Ms. Lynch, I kind of learned a little something today. It's just that I don't always understand what I am doing or supposed to be doing.
~Diamond Princess~
I learned how to solve a trigonometric equation,
the cosine curve is where the terminal side of that line intersects in the unit circle, and that the max. and min. is the same as the sine
Lacrishia
The three main components I learned from working with the cosine module:
1)y=1 when cos is 0.
2)The curve repeats itself after every full rotation (2pi)
3)That a negative rotation means a curve going to the negative side of the coordinate plane.
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