Posted by Ashley on Monday, November 22, 2010 at 6:25pm.
Two rt triangles are formed. The common ver. side represents the ht. of
the mountain. The 3.5 deg angle of elevation lies bet. the hyp and hor side of the larger triangle. The 9 deg
angle is located bet. the hyp and hor side of the smaller triangle.
tan3.5 = h / (x + 13),
h = (x + 13)tan3.5,
h = (x + 13)0.0612,
Eq1: h = 0.0612x + 0.7951,
tan9 = h/x,
Cross multiply:
h = xtan9,
Eq2: h = 0.1584x.
Substitute 0.1584x for h in Eq1:
0.1584x = 0.0612x + 0.7951,
0.1584x - 0.0612x = 0.7951,
0.0962x = 0.7951,
x = 0.7951 / 0.0962 = 8.27.
h = 0.1584 * 8.27 = 1.31 mi = ht of mt.
Emily chooses two numbers.
She adds the two numbers together and divides the rusult by 2.
Her answer is 44
One Emily's numbers is 12
what is Emily's other numbers?
!@#$%^&
!@#$%^&
!@#$%^&
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