Q: How do you work out an angle?

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It is: 180-interior angle = exterior angle

When the angle is 90 degrees.

It depends on what angle. The main angles of a rectangle are all 90 degrees and knowing that does not help. If however, the angle in question is the angle made by the diagonal with one of the sides, then it is possible to use a basic trigonometric ratio to work out the length. Details will depend on which angle is given.

You can use Snell's Law. Note that you need two angles for this - the incoming angle, and the outgoing angle.

Some of the devices used to measure angle are Transit, Protractor and Compass.

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It is: 180-interior angle = exterior angle

To find the angle in the work done, you can use the formula: work = force * distance * cos(angle). Rearrange the formula to solve for the angle: angle = cos^(-1)(work / (force * distance)). Substituting the values of work, force, and distance into the equation will give you the angle.

When the angle is 90 degrees.

An angle bead is a bead worked on or fixed to the angle of any architectural work, for example protecting the angle of a wall.

If the angle between the displacement and force applied is less than a right angle, then it is Positive Work done. If the angle between the displacement and the force applied is greater than a right angle then it is Negative Work done. If the displacement and force are at right angles, or either is zero, then it is Zero Work done.

the formula F.S cos angle is used (the dot product) so if angle is 0,cos angle=1 hence work done is positive and maximum if angle is 90 so cos 90 is 0 hence work done is minimum if work done is negative the angle is 180 The work done by friction is always negative (opposite the force) Since work is force x displacement, a negative value for work could mean that the displacent was negative

You cannot. An exterior angle of a decagon can have any value.

When you apply force at an angle to the direction of movement, only the component of the force in the direction of movement does work. The work done is calculated using the cosine of the angle between the force and the direction of movement. The component of the force perpendicular to the direction of movement does not contribute to the work done.

A solid angle is 3-dimensional, a planar angle is 2-d.

do your work yourself

When two lines intersect then the degree is called an angle. This does not work with parallel lines.

It depends on what angle. The main angles of a rectangle are all 90 degrees and knowing that does not help. If however, the angle in question is the angle made by the diagonal with one of the sides, then it is possible to use a basic trigonometric ratio to work out the length. Details will depend on which angle is given.