Back to Understand trigonometric ratios — Problem 5 · Task Set 19

Exercises: Understand Trigonometric Ratios

Show your work for each problem. Round decimal answers to the nearest hundredth unless otherwise stated.

Grade 9·22 problems·~30 min·Common Core Math - HS Geometry·standard·hsg-srt-c-6

Work through problems with immediate feedback

Fluency Practice

Calculate the trigonometric ratios. Express answers as fractions or decimals rounded to the nearest hundredth.

In right triangle $ABC$ with right angle at $C$ , angle $A = 40\degree$ and $AB = 15$ . Using $\sin(40\degree) \approx 0.643$ , find the length of side $BC$ . Round to the nearest hundredth.