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Right Triangle Geometry

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This video is for the redesigned SAT which is for you if you are taking the SAT in March 2016 and beyond.

The following diagram shows trigonometry using a right triangle. Scroll down the page for more examples and solutions on using right triangle trigonometry and geometry.

Right Triangle Trigonometry

How to find missing side using trigonometry?

Right Triangle Geometry — Basic example

It is given that sin(70°) = 0.9396..., cos(70°) = 0.3420..., and tan(70°) = 2.7474...
In the diagram above, ∠ABC and ∠BCD are right angles, AC || CD.
Which of the following is closest to the length of AB?
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