Asked by Juleana
the vertex angle of an isoceles triangle is 120. the base length is 18. what is the length of the altitude to the base in simplest form
Answers
Answered by
Anonymous
tan(120°/2)=(18/2)/h
tan(60°)=9/h
h=9/tan(60°)=9*ctg(60°)
h=9/sqroot(3)
9=3*sqroot(3)*sqroot(3)
h=3*sqroot(3)*sqroot(3)/sqroot(3)
h=3*sqroot(3)
h=5.1961524227
tan(60°)=9/h
h=9/tan(60°)=9*ctg(60°)
h=9/sqroot(3)
9=3*sqroot(3)*sqroot(3)
h=3*sqroot(3)*sqroot(3)/sqroot(3)
h=3*sqroot(3)
h=5.1961524227
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