Inverse Trig (Flashcard 2) degrees(2min timer)

Front

What is the range of angles for which cos Θ = -1/√2?

Back

The angles are 135° and 225°.

Front

What is the angle for which sin Θ = 1/2 in the range 0 ≤ Θ < 360°?

Back

The angles are 30° and 150°.

Front

What is the angle for which Θ = 270°?

Back

Θ = 270° is a specific angle where sin Θ = -1.

Front

What is the value of cos 135°?

Back

cos 135° = -1/√2.

Front

What is the value of cos 225°?

Back

cos 225° = -1/√2.

Front

What is the value of sin 30°?

Back

sin 30° = 1/2.

Front

What is the value of sin 150°?

Back

sin 150° = 1/2.

Front

What is the significance of the unit circle in trigonometry?

Back

The unit circle helps to define the sine and cosine values for all angles.

Front

What are the coordinates of the point on the unit circle at 135°?

Back

The coordinates are (-√2/2, √2/2).

Front

What are the coordinates of the point on the unit circle at 225°?

Back

The coordinates are (-√2/2, -√2/2).