Sine and cosine on the unit circle?

Draw a unit circle with a radius of 1 dm. Use the unit circle to determine sin(alpha) and cos(alpha) for the angle alpha. Check with the TR.

What should I do with this task

A) 75 degrees

B) 120 degrees

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BenjamBluemchen
1 year ago

1 dm are 10 cm

You can normally count on the TR and take the result once 10.

tunik123
1 year ago

You shall draw a circle with 1 dm radius, with a coordinate system whose origin is the center of the circle. Caution: A4 page is only slightly wider than 2 dm.

The two angles are then drawn in and the sine (y value) and the cosine (x value) are measured in each case. 1 dm corresponds to the value 1.