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challenging edexcel q

In triangle RPQ, RP = 8.7 cm PQ = 5.2 cm Angle PRQ = 32° (a) Assuming that angle PQR is an acute angle, calculate the area of triangle RPQ. Give your answer correct to 3 significant figures.

Could this be a right angle triangle?

Reply 1

westcw13

use sine rule to work out angle PQR, and then so 180 - PRQ - PQR to work out RPQ.

Now you can do 1/2 absin(C) to work out area

Reply 2

brainmaster

Original post by razzy02

use the sine rule to get the angle PQR and then use find the missing angle RPQ by knowing all angles in a triangle add up to 180 then use the formula 1/2ab sin C.
and no it can't be right angle triangle but you can't say for sure so u must find the unknown angles to confirm but I don't think it's an right angle triangle.

let me know if I helped :smile: