30 60 90 Triangle Calculator Side A * Enter the length of Side A. Side B * Enter the length of Side B. Side C * Enter the length of Side C. Calculate Reset Show Calculation Steps More CalculatorsLength CalculatorsLength to Beam Ratio CalculatorRafter Length Calculator Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Name * Email * Website Comment * Save my name, email, and website in this browser for the next time I comment.