Sin= Opposite/Hypotenuse
Cos= Adjacent/Hypotenuse
Tan= Opposite/Adjacent
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use the SohCahToa method
sohcahtoa SOH|CAH|TOA S= O opposite over hypotenuse _ H C=A adjacent over hypotenuse _ H T=O opposite over adjacent _ A
The longest length would be the hypotenuse. You can use SOHCAHTOA to find the length.
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Just remember SOHCAHTOA, SOH is using the sine, only use this when you have the Hypotenuse and the Opposite. Sin(a)= O/H CAH is using the cosine, only use this when you have the Hypotenuse and Adjasent. Cos(a)=A/H TOA is using the tangent, only use this when you have the Opposite and Adjasent. Tan(a)=O/A