Q:

From a point P on the ground the angle of elevation of the top of a 10m tall building is 30°. A flag is hoisted at the top of the building and the angle of elevation of the top of the flagstaff from P is 45⁰. Find the length of the flagstaff (Take √3 = 1.732) 

• 1
  10 √3 m
• 2
  7.32 m
• 3
  10 (√30+2) m
• 4
  10 (√30+1) m