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Sine is a function which is defined for all real numbers: so you can have sin(240 degrees) which, given that a triangle cannot have any angle of 240 deg) appears to make no sense at all. This is because you are limiting the sine function by its definition in the context of a right angled triangle.
There are at least two other ways of defining the sine function. One of them is to consider a unit circle at the origin. That is, a circle with centre at (0,0) and radius = 1. Measure the angle, x, between the radius and the x-axis in the anti-clockwise direction. Then sin(x) is the y-coordinate of the point where the radius reaches the circle or, the vertical height of that point..
Another way to define sine is as the following infinite sum:
sin(x) = x - x^3/3! + x^5/5! + x^7/7! - ... where x is any angle measured in radians. (If you need to convert then 180 degrees = pi radians).
What else can I help you with?
How is a triangle formed?
A triangle is formed by three straight lines and has three interior angles that add up to 180 degrees.
What is the measure of the angle formed by two tangents drawn to a circle from an external point if they intersect a major arc whose measure is 230?
-- The major arc = 230 degrees-- The minor arc ... the arc between the tangents ... is (360 - 230) = 130 degrees.-- The line from the vertex of the angle to the center of the circle bisects the arc,so the angle between that line and the radius to each tangent is 65 degrees.-- The radius to each tangent is perpendicular to the tangent. So the radius, the tangent,and the line from the vertex to the center of the circle is a right triangle.-- In the right triangle, there's 90 degrees where the radius meets the tangent, and65 degrees at the center of the circle. That leaves 25 degrees for the angle at thevertex.-- With another 25 degrees for the right triangle formed by the other tangent,the total angle formed by the two tangents is 50 degrees.
What three-dimensional shape is formed by rotating a right triangle 360 degrees around one of its legs?
The result is a right cone
What is a triangle formed by the three mid segments of a triangle?
It is a triangle similar to the original but quarter the size.
Can an acute-angled triangle have an acute exterior angle?
No. An interior angle plus its exterior partner add up to 180 degrees. In order for an exterior angle to be acute, its interior partner would have to be obtuse, which doesn't happen in an acute triangle.
How is a triangle formed?
A triangle is formed by three straight lines and has three interior angles that add up to 180 degrees.
How are acute triangles formed?
An acute triangle has one specific triangle that is less than 90 degrees.
What are the angles formed by two sides of a triangle?
Only one angle is formed by two sides of a triangle. It can be anything less than 180 degrees.
What type of triangle can be formed with angles measure 32 126 and 32 degrees?
What type of triangle, if any , can be formed with angle measures of 32°, 126° , and 32°
When a square is divided by a diagnal is an isosceles acute triangle is form?
A right angle isosceles triangle is then formed which will have two 45 degrees angles and one 90 degrees angle.
If you split a triangle in three will it still add up to 180 degrees?
each triangle formed from the first will have angles adding up to 180
How do you determine that the triangle formed is a right triangle?
One of its interior will be 90 degrees. also there will be a little box in the corner to show that it is a right angle.
What 3 dimensional figure is formed by continually rotating a right triangle 360 degrees?
the answer is cone
How triangles can be formed inside a Pentagon?
3 triangles because there are 540 degrees in a pentagon and 180 degrees in a triangle so 3*180 = 540 degrees
What is an angle formed by one side of the triangle and the extension of an adjacent angle?
Exterior and interior angles at the vertex of a triangle add up to 180 degrees
An angle formed by one side of a triangle and the extension of the adjacent side is What?
Exterior and interior angles at the vertex of a triangle add up to 180 degrees
What is an angle formed by one side of a triangle and the extension of the adjacent side?
Exterior and interior angles at the vertex of a triangle add up to 180 degrees
