In right triangle DEF, ∠E is a right angle, m∠D=26∘, and DF=4.5. sin26∘≈0.44 cos26∘≈0.90 tan26∘≈0.49What is the measurement of EF?

Question

In right triangle DEF,DEF, ∠E∠E is a right angle, m∠D=26∘,m∠D=26∘, and DF=4.5.DF=4.5.

sin26∘≈0.44sin⁡26∘≈0.44

cos26∘≈0.90cos⁡26∘≈0.90

tan26∘≈0.49

 

What is the measurement of EF?

 

 

Answer 1

EF=4.5sin(26)=4.5×0.44=1.98 approx.