Physics, asked by naseebnu0091780, 10 months ago

why are Ax =A costheta ?​

Answers

Answered by nkpm2003
2

ADDING VECTORS

Adding vectors can be done graphically, but this can get messy. The best way is the component method.

First define an x and y axis for your system - the choice is up to you.

Find the x and y component of the vectors you wish to add. Be very careful, there are some tricks here:

Make sure your calculator is in the proper mode (degrees or radians)

Are your angles measured from the x or y axis? To keep things simple, it is probably best to have all your angles measured from the x-axis.

If your angles are measured from the x axis, you can always use the same formula for the x and y components: Ax = A cos (theta) Ay = A sin(theta)

Check the sign of the component. No matter how you calculate your component - check the sign. If it is going in the negative y direction, makes sure the y-component is negative

Add components - that is the x-component of the resultant is the addition of the x-components - same for y

To Find the length of the resultant - use the pythagorean theorm

To find the angle (from the x-axis) you can use theta = inverse tan (Ry / Rx)

HOPE IT HELPS

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