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SOHCAHTOA

sin⁡θ=opphypcos⁡θ=adjhyptan⁡θ=oppadj\sin\theta = \dfrac{\text{opp}}{\text{hyp}}\quad \cos\theta = \dfrac{\text{adj}}{\text{hyp}}\quad \tan\theta = \dfrac{\text{opp}}{\text{adj}}

Mnemonic for the three core ratios in a right triangle.

right trianglebasic

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