Mark M. answered • 09/01/17
Tutor
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Mathematics Teacher - NCLB Highly Qualified
sin (a + b) = sin a cos b + cos a sin b
0.6 cos b + 0.5 cos a = sin a cos b + cos a sin b
Thus
sin a = 0.5
sin b - 0.6
Can you continue?
Mark M.
Welcome.
<12i + 16j> added to <12i - 16j> results in a vector on the positive x axis. (draw a diagram).
The addition to two vectors cannot have the same magnitude as one of the vectors (unless one of the vectors is the zero vector).
Please check the problem.
Report
09/01/17
Kebeh Maryann O.
A vector X is added to vector Y = 12i -16j. The resultant vector lies along the positive x axis and has the same magnitude as X. What is the magnitude of X?
a.
20.7
b.
16.7
c.
11.3
d.
4.7
a.
20.7
b.
16.7
c.
11.3
d.
4.7
Report
09/01/17
Mark M.
Stumped on the condition that the resultant has the same magnitude as one of the addends.
Report
09/01/17
Kebeh Maryann O.
09/01/17