Angles
Find the missing angles a˚ and b˚:
Word Problem
A bridge is built across a river. One quarter of the bridge is over the left bank of the river and one third of the bridge is over the right bank. The river is 120 m wide. How long is the bridge?
To find a, you can do 180° - 132°. This would give you 48°. Now to find b, you need to do 180° - (69° + 48)°. This would give you 63° and now, you have your answers.
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