What is the distance between the points (1,5) and (5,-4)?
2 answers:
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Answer:
Step-by-step explanation:
we know that
The volume of a cube is equal to
where
s is the side length of the cube
we have
substitute in the formula
Remember the power rule
----> multiply the exponents
so
Step-by-step answer:
Referring to the attached diagram, the resultant of two forces each with magnitude F and inclined to each other at 2a equals
Ra = 2Fcos(a) ..............................(1)
Similarly, the resultant of two forces each with magnitude F and inclined to each other at 2b equals
Rb = 2Fcos(b)..............................(2)
We are given that
Ra = 2Rb ....................................(3)
Substitute (1) & (2) in (3) gives
2Fcos(a) = 2(2Fcos(b))
Expand
2Fcos(a) = 4Fcos(b)
Simplify
cos(a) = 2 cos(b) QED
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