Analyze the statements below and complete the instructions that follow.
2 answers:
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Factor square root of 32: 2^5/2.
Factor 4: 2^2
Cancel 2 1/2= 2 1/2.
2 1/2= square root of 2.
Answer:
Hope this helps :)
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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