The starting of this week (week 4) we have so far learned how to do certain ratios using our calculators. Scientific ones to be exact. We learned how to change our calculator so that it is in degrees, and how to use the sin, cos, tan, and 2ndF button. We also learned how to label each triangle and which shape is which.
So, in order to figure out each trigonometry ratios you must press either the sin, cos or tan button then push in the number that is in degrees.
ex.
To find sin 68 degrees press…
sin 68 = 0.9271
The number will most likely always have a decimal so it’s smart to put it to 4 decimal places for better accuracy.
Another thing we learned is labeling each triangle. So, to find each side of the triangle (hypotenuse, opposite side, and adjacent) you need to find the angle sign. In each triangle there is a little square in one of the corners
ex.
the opposite side of that square or the edges of that square is pointing to the hypotenuse.
Another side that is important is the opposite side. This side is located on the opposite side of the closest point. If the sides of the point are super close together that is where the theta is. A theta is a Greek letter that is used to help find the opposite side in trigonometry.
The final side is the only one left. The last one is the adjacent side. This is the last side that can be labeled so it is obvious which one it could be.
And finally, those are all three sides labeled.