Q: What is sine of a negative angle?

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225 degrees

the sine of an angle can't be greater than 1.0

It can. The sine function is defined for all numbers--negative, 0, and positive. The function is periodic and repeats every 360 degrees.

It is 1.

Sine of an angle (in a right triangle) is the side opposite of the angle divided by the hypotenuse.

Related questions

All the angles in 4th quadrant have positive cosine and negative sine e.g. 280,290,300,310...etc.

225 degrees

the sine of a 30 degree angle is 0.5

the sine of an angle can't be greater than 1.0

No. The sine of an angle is not directly proportional to the angle. It is a function of the angle, but it is periodic, repeating every 360 degrees of the angle.

It is 1.

It can. The sine function is defined for all numbers--negative, 0, and positive. The function is periodic and repeats every 360 degrees.

The anti derivative of negative sine is cosine.

The sine theta of an angle (in a right triangle) is the side opposite of the angle divided by the hypotenuse.

Sine of an angle (in a right triangle) is the side opposite of the angle divided by the hypotenuse.

An angle can have a sine ratio, not a triangle.

Sine = opposite / hypotenuse