Question

Given the following diagram, enter the required information.

Answer 1

• 39° 44' 52''

Explanation:

Given

• m∠DXB = 70° 15' 12''
• m∠DXC = 30° 30' 20''

To find

• m∠CXB

Solution

According to Angle Addition postulate:

• m∠DXB = m∠DXC + m∠CXB

Therefore

• m∠CXB = m∠DXB - m∠DXC
• m∠CXB = 70° 15' 12''- 30° 30' 20'' = 39° 44' 52''