12=xcos90
You asked:
Solve the equation \(12 = x \cdot \cos\left( 90 \right)\) for the variable \(x\).
MathBot Answer:
The solution is: \[x = \frac{12}{\cos{\left(90 \right)}} \approx -26.781314\]
\[\begin{aligned}12 &= x \cos{\left(90 \right)}\\x \left(- \cos{\left(90 \right)}\right) &= -12\\x &= \frac{12}{\cos{\left(90 \right)}}\end{aligned}\]