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Earn +20 ptsQ: Why you only use cosine for scalar product?
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Why you use cosine theta with cross product?
Normally you use sine theta with the cross product and cos theta with the vector product, so that the cross product of parallel vectors is zero while the dot product of vectors at right angles is zero.
What is the use of dot product in Physics and explain?
Dot Products in Physics denote scalar results fmo vector products, e.g Work = F.D = FDCos(FD) a scalar result from the dot product of two vectors, F Force and D Displacement.
How can i find out the hypotenuse if i only have 1 side and an angle?
Use the appropriate sine or cosine ratio.
How do you use cosine?
cosine = adjacent/hypotenuse. It can be used as other trig functions can.
How do you work out the angles in a triangle with only 3 sides and no angles?
use the inverse sine or cosine or tangent
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