garydesir1 garydesir1

01-07-2017
Mathematics

contestada

Can someone help me with this one please ? Thanks!

Can someone help me with this one please Thanks class=

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murtadhasport murtadhasport

01-07-2017

cos 35 = 12cm / hypotenuse (H)
0.81 = 12 / H
H = 12/0.81 = 14.8
h^2 = x^2 + 12^2
219.04 = x^2 + 144
x^2 = 75.04
x = 8.6 (~8.4)
so it is (c)

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01-07-2017

tan 35°=X/12
0.700=X/12
X=12×0.700
X=8.4
therefore X = 8.4cm

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