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Mathematics 14 Online
OpenStudy (anonymous):

I tried and failed horribly. Please help if you can! Solve for value f (diagram in the comments)

OpenStudy (anonymous):

OpenStudy (phi):

You should watch this until it sinks in... http://www.khanacademy.org/math/trigonometry/v/basic-trigonometry

OpenStudy (anonymous):

it's 30-60-90 triangle - all sides have specific ratio and you can solve that based on the ratio of lengths

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