EM-1389

Pythagoras’ theorem

E Math · Secondary 3 · Hard · Pythagoras’ theorem

From a point P, the bearing of Q is

040^\circ

and the bearing of R is

130^\circ

. Given that

PQ=PR=120

m, find the distance

QR

.

170 m
120 m
85.0 m
240 m

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