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Frequently Asked Questions

How to find angle when given two sides?

“SAS” is when we know two sides and the angle between them. use The Law of Cosines to calculate the unknown side, then use The Law of Sines to find the smaller of the other two angles, and then use the three angles add to 180° to find the last angle. What angle is cos1? The answer is 120°.

How to calculate the sides and angles of triangles?

b = √ (c² - a²) for hypotenuse c missing, the formula is. c = √ (a² + b²) Given angle and hypotenuse. Apply the law of sines or trigonometry to find the right triangle side lengths: a = c * sin (α) or a = c * cos (β) b = c * sin (β) or b = c * cos (α) Given angle and one leg.

How do you find the unknown length of a triangle?

How do you find the unknown length of a triangle? The Pythagorean theorem states that a2 + b2 = c2 in a right triangle where c is the longest side. You can use this equation to figure out the length of one side if you have the lengths of the other two.


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