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Need help working out the following question please. See post below. Rep given

Need help working out the following question please.

See post below.

Rep given

See post below.

Rep given

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(18) Jump to unreadPost a commentThat's short for Opposite side.

Need an answer in Metres

Could be easier way but not sure.

Did you guys use cosine and sine rule?

QS= root (27 squared +50 squared - (2*27*50*cos82)

This gives QS= 53.4m

Now use sine rule for upper triangle:

PS= (53.4*sin38)/sin118

This gives PS=37.2m

Hope this helps.

:)

Could be easier way but not sure.

I was trying to use sohcahtoa :thinking: ..will try again

Then use the sine rule

Sin(38)/PS = Sin(118)/53.416

=> PS = 53.416 * Sin(38) / Sin(118) = 37.246m

Edit: Doh, too slow :(

thats for right angle triangles

b^2=a^2+c^2-2acCosB

Yes. How did you guess?