Angles from 0° to 180°
Types of exercises: sine, cosine and tangent from a point on the side of an angle, sign of the sine, cosine and tangent of an angle from 0° to 180°.
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Is this number positive, negative or equal to zero?
sin 145°
Find the cosine of the angle α
The angle α, measuring from 0° to 180°, has its vertex at the origin, and its initial side is the positive x-axis. The point P = (12, 16) lies on the terminal side of this angle.
Is this number positive, negative or equal to zero?
sin 22° · tan 63°
Find the cosine of the angle α
The angle α, measuring from 0° to 180°, has its vertex at the origin, and its initial side is the positive x-axis. The point P = (−2, 1) lies on the terminal side of this angle.
Is this number positive, negative or equal to zero?
sin 178° · sin 93°
Find the tangent of the angle α
The angle α, measuring from 0° to 180°, has its vertex at the origin, and its initial side is the positive x-axis. The point P = (5, 12) lies on the terminal side of this angle.
Is this number positive, negative or equal to zero?
sin 77° · cos 12°
Find the sine of the angle α
The angle α, measuring from 0° to 180°, has its vertex at the origin, and its initial side is the positive x-axis. The point P = (6, 5) lies on the terminal side of this angle.
Is this number positive, negative or equal to zero?
tan 5° · tan 131°
Choose the value of the tangent of the angle α
The angle α, measuring from 0° to 180°, has its vertex at the origin, and its initial side is the positive x-axis. The point P = (0, 13) lies on the terminal side of this angle.
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