Answer:
<h3>5 th box </h3><h2>0: )</h2>
Step-by-step explanation:
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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Have a nice day!
Answer:
r=20
Step-by-step explanation:
take the number you have, divide it by the numerator, and multiply it by the denominator, like shown:
4/5 of a number (r) is 16
16/4=4
4*5=20
r=20
ta-da! :P
Answer:
answer is d
Step-by-step explanation: