Alg II Unit Circle

Front

Another way to write the coordinates of a point (x,y) is_________

Back

(cosΘ , sinΘ)

Front

In a unit circle, the formula for SinΘ is_______

Back

SinΘ = Y

Front

What is the coordinate on a unit circle for 30°?

Back

(√3/2 , 1/2)

Front

What is the measure of the legs in a 45°-45°-90° triangle? (This is also the length of x and y)

Back

√2 / 2

Front

What is the sin of 45°?

Back

√2/2

Front

What is the cosine of 0°?

Back

1

Front

What is the tangent of 90°?

Back

Undefined

Front

What is the coordinate on a unit circle for 90°?

Back

(0, 1)

Front

What is the cosine of 30°?

Back

√3/2

Front

What is the sine of 60°?

Back

√3/2