Joppy said:
my solutionAlbert said:
The angle $\angle ADC$ is one of the angles in the triangle $\triangle ABC$ formed by the vertices A, B, and C. It is the angle formed by the sides AC and DC.
The measure of an angle is typically given in degrees, and can be found using the formula $\angle ADC = \frac{180 - (\angle BAC + \angle BCA)}{2}$. This formula applies to any triangle, including $\triangle ABC$.
To find the measure of $\angle ADC$, you will need to know the lengths of at least two sides of the triangle and the measure of at least one other angle in the triangle. This information can be obtained through measurements, given values, or through other relevant formulas.
Yes, you can use trigonometry to find the measure of $\angle ADC$ if you have the lengths of two sides of the triangle and the measure of one other angle. You can use the law of sines or the law of cosines to solve for the unknown angle.
Yes, there are a few special cases for finding the measure of $\angle ADC$. If the triangle is a right triangle, you can use basic trigonometry functions to find the measure of the angle. Additionally, if the triangle is an equilateral triangle, all angles will have the same measure, so $\angle ADC$ will be equal to $\frac{180}{3} = 60$ degrees.
