jamarstand
28.09.2019 •
Mathematics
Find the indicated part for the similar triangles.
ab=9 cm
bc=24 cm
de=20.8 cm
find ef. (simplify your answer)
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Ответ:
24 cm / 20.8 cm = 9 / x
187.2 cm = 24x
x = 7.8
EF is 7.8 cm.
Ответ:
answer: 53.13°.
explanation:
in a right triangle, the leg accross an angle is named opposite leg.
the function sine relates the opposite leg with the hypothenuse in this way:
sin (x) = opposite-leg / hypothenuse.then, you have:
opposite leg = 4 hypothenuse = 5sin (x) = 4/5 arcsin(4/5) = x 53.1° = xhence, angle x is 53.13° ← answer