A gauge is used to check the diameter of a crankshaft journal. It is constructed to make measurements on the basis of a right triangle with a 60.0° angle (see figure in the link below). Distance AB in the illustration is 10.6 cm. Find radius BC of the journal.

Question

www.webassign.net/ewenmath10/13-5-013-alt.gif

Answer 1

so angle A = 30

sin30 = BC/AB
BC = ABsin30 = 10.6(1/2) = ...

Answer 2

10.6(1/2) = 5.3

Answer 3

I got 5.3 wrong

Answer 4

SOMEONE HELP ME!

Answer 5

According to the diagram you supplied and the given data,
the answer of 5.3 cm is correct.