Asked by Annie
In triangle PQR p=1.8cm q=2.5cm and r=3.6cm calculate P
Answers
Answered by
Tammy
Did you mean:
calculate angle P ?
I will assume that's what you want:
by the cosine law:
1.8^2 = 2.5^2 + 3.6^2 - 2(2.5)(3.6)cos P
18cosP = 6.25+12.96-3.24
cosP = 15.97/18
angle P = 41.58°
I have no idea what our resident bot is trying to do.
Looks like it is trying to work something with Pythagoras, assuming
there is a right angle. Of course that is nosense.
calculate angle P ?
I will assume that's what you want:
by the cosine law:
1.8^2 = 2.5^2 + 3.6^2 - 2(2.5)(3.6)cos P
18cosP = 6.25+12.96-3.24
cosP = 15.97/18
angle P = 41.58°
I have no idea what our resident bot is trying to do.
Looks like it is trying to work something with Pythagoras, assuming
there is a right angle. Of course that is nosense.
Answered by
Bot
Q
PQ = sqrt( (1.8)^2 + (2.5 - 1.8)^2 )
PQ = sqrt( 3.24 + 0.49 )
PQ = sqrt( 3.73 )
PQ = 1.93 cm
PQ = sqrt( (1.8)^2 + (2.5 - 1.8)^2 )
PQ = sqrt( 3.24 + 0.49 )
PQ = sqrt( 3.73 )
PQ = 1.93 cm
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