Identify the cofunction equivalent to sin ⁡ 3 1 ∘ \sin31^{\circ} sin 3 1 ∘ .

cos ⁡ 5 9 ∘ \cos59^{\circ} cos 5 9 ∘

cos ⁡ 14 9 ∘ \cos149^{\circ} cos 14 9 ∘

csc ⁡ 5 9 ∘ \csc59^{\circ} csc 5 9 ∘

csc ⁡ 14 9 ∘ \csc149^{\circ} csc 14 9 ∘

Cofunctions of Complementary Angles

2. Trigonometric Functions on Right Triangles / Cofunctions of Complementary Angles / Problem 1

Problem 1

Identify the cofunction equivalent to $$\sin$31^{$\circ$}$ .

$$\cos$59^{$\circ$}$

$$\cos$149^{$\circ$}$

$$\csc$59^{$\circ$}$

$$\csc$149^{$\circ$}$