Trigonometry is also useful for general triangles, not just right-angled ones .
It helps us in Solving Triangles. “Solving” means finding missing sides and angles.
Example: Find the Missing Angle “C”
Angle C can be found using angles of a triangle add to 180°:
So C = 180° − 76° − 34° = 70°
We can also find missing side lengths. The general rule is:
When we know any 3 of the sides or angles we can find the other 3
(except for the three angles case)
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