Question

Draw a triangle with lengths of two sides 4cm, 5 cm, and the angle between them 60, and draw it's circum circle?​

Answer 1

Answer:

There are two possible triangles with angle A=60° and side a=6.4 cm and side b=7 cm. What are all the unknown sides of the two triangles?

Start with the Law of Cosines: cos 60° = ½

6.4² = c² + 7² -2 · c · 7 · ½

c² - 7c + 8.04 = 0

x ≈ 5.55; x ≈ 1.45

The two unknown sides are about 5.55 centimeters and 1.45 centimeters

Step-by-step explanation:

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