Solve cos15^circ=12pizpi

$$\cos 15 ^ { \circ } = 12 \pi z \pi$$

Solve for z

$$z=\frac{9659258262890683}{120000000000000000\pi ^{2}}\approx 0.008155729$$

Steps for Solving Linear Equation

Evaluate trigonometric functions in the problem

$$0.9659258262890683 = 12 \pi z \pi$$

Multiply \pi and \pi to get \pi ^{2}.

$$0.9659258262890683=12\pi ^{2}z$$

Swap sides so that all variable terms are on the left hand side.

$$12\pi ^{2}z=0.9659258262890683$$

Divide both sides by 12\pi ^{2}.

$$\frac{12\pi ^{2}z}{12\pi ^{2}}=\frac{0.9659258262890683}{12\pi ^{2}}$$

Dividing by 12\pi ^{2} undoes the multiplication by 12\pi ^{2}.

$$z=\frac{0.9659258262890683}{12\pi ^{2}}$$

Divide 0.9659258262890683 by 12\pi ^{2}.

$$z=\frac{9659258262890683}{120000000000000000\pi ^{2}}$$