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**sinθ = length of opposite / length of adjacent**

Doing some algebra, I got:

**(sinθ)length of adjacent = length of opposite**

Where θ is the acute angle directly adjacent to the triangle's right angle. I worked out a few problems on paper, which seemed to fit together well, but like I said: I'm no expert. Is there anything I need to know about trig functions (special rules, etc.)? Thanks in advance for any help you guys can give me :)