2. Trigonometric Functions on Right Triangles

Write the expression in terms of the appropriate cofunction.

$\cos\left(\frac{19\pi}{45}\right)$

Write the expression in terms of the appropriate cofunction.

$\cot\left(25\degree\right)$

Find the acute angle solution to the following equation involving cofunctions. $\theta$ is in degrees.

$\cos\left(2\theta+15\right)=\sin\left(5\theta+12\right)$

Find the acute angle solution to the following equation involving cofunctions. P is in degrees.

$\sec\left(\frac{4P}{5}+20\right)=\csc\left(\frac{5P}{8}+\frac{223}{4}\right)$

Find a cofunction with the same value as the given expression.

sin 19°

Find a cofunction with the same value as the given expression.

csc 35°

Find a cofunction with the same value as the given expression.

tan (𝜋/7)

Find a cofunction with the same value as the given expression.

cos (3𝜋/8)