SOLUTION: The sides of a triangle are 2cm, 3cm, and 4cm. Determine the measurement of the angle opposite the longest side.

Algebra.Com
Question 438295: The sides of a triangle are 2cm, 3cm, and 4cm. Determine the measurement of the angle opposite the longest side.
Answer by Alan3354(69443)   (Show Source): You can put this solution on YOUR website!
Use the Cosine Law.

Solve for cos(A)

RELATED QUESTIONS

Two side of a triangle are 50m and 60m long. The angle included between these sides are... (answered by psbhowmick)
3cm 4cm 4cm 6cm 2cm determine the... (answered by ikleyn)
A triangle has sides a = 2cm, b = 3cm and ∠C = 60° find the length of side... (answered by Alan3354)
The sides of a triangle are 50,60, and 70. Find the length of the angle bisector from the (answered by greenestamps)
The sides of a triangle are 50,60, and 70. Find the length of the angle bisector from the (answered by rothauserc)
the perimeter of a triangle is 35cm. The longest side is 3cm less than twice the smallest (answered by algebrahouse.com)
A triangle has sides 3cm, 5cm and 7 cm. The longest side of a similar triangle is 12 cm.... (answered by ikleyn)
A triangle has sides 3cm, 5cm and 7 cm. The longest side of a similar triangle is 12 cm.... (answered by Shin123,ikleyn,MathTherapy)
the sides of a parallelogram are 3cm and 2cm and the distance between the two longer... (answered by Gogonati)