Question

Solve the following problem:
Given: m∠ATB = 63°, mAB = 115°
Find: mDC

Answer 1

Answer:, m∠ATB = mAB + mDC

Substituting in the given values, we get:

63° = 115° + mDC

Solving for mDC, we get:

mDC = 115° - 63° = 52°

Therefore, the measure of arc DC is 52°.

Explanation: