Need help on this page in my performance task !! Thank you so much if you help !! <3

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asked Feb 17, 2019 125k views

1 Answer

Mosheh · Answer 1 · 2019-02-22T12:25:12+0000

in the triangle XYB
cos(x)=XY/XB

in the triangle AYZ
cos(z)=YZ/AZ
we know that
cos(x)=cos(z) and XY=YZ

therefore
XY/XB=YZ/AZ-------------- > (XY/YZ)=(XB/AZ) remember that XY=YZ
1=(XB/AZ)---------- > XB=AZ---------- > the statement was proved

Need help on this page in my performance task !! Thank you so much if you help !! <3

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