Kenneth S. answered • 02/20/17

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Expert Help in Algebra/Trig/(Pre)calculus to Guarantee Success in 2018

Begin by making a sketch of three circles, having radii 0.9, 1.1 & 1.5 cm each.

Draw the three line segments joining centers, two at a time, thus forming a triangle with sides

1.1+1.5 cm, 1.1+0.9 cm, and 1.5+0.9 cm.

Now you know all the three side lengths of this triangle; you may use the Law of Sines to calculate the triangle's angles.

Advice: calculate the largest angle first (it's across from the largest side).

Kenneth S.

Yikes! if you have drawn the three tangent circles, then joining the centers, you should see that each side of the triangle has length that is the sum of the radius of two circles. Make the drawing, study it, and THINK!

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02/20/17

Zen X.

02/20/17