The mean of 4.8,1.5,6.3,6.7,8.3
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We are given
we know that
so, we get
opposite =7
adjacent=24
now, we can find hypotenuse
now, we can draw triangle and then switch vertices accordingly
we can find cos(B) using second triangle
In second triangle:
adjacent=7
hypotenuse =25
so, we get
................Answer
