Respuesta :

calculista
the answer in attached figure

we know that
sin(30°)=0.5    cos(30°)=√3/2
sin(60°)=√3/2  cos(60°)=0.5

sin(60)=BC/AC=5√3/10=√3/2-------------- is ok
cos (60)=AB/AC=5/10=0.5---- is ok

sin(30)=BA/AC=5/10=0.5-------------- is ok
cos (30)=BC/AC=5√3/10=√3/2-------------- is ok

if angle B is 90°
then
AB²+BC²=AC²------------> 5²+(5√3)²=10²=(25+75)=100------------- > is ok



the solution in the attached figure
Ver imagen calculista

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