In ΔABC, ∠B = 70° and ∠C = 30°, AD and AE are respectively the perpendicular on side BC and bisector of ∠A. The measure of ∠DAE is:
A. 24°
B. 10°
C. 15°
D. 20°
Answer: Option D
Solution(By Examveda Team)
∠A = 180° - (∠B + ∠C)
∠A = 180° - 100°
∠A = 80°
∠BAE = ∠EAC = $$\frac{1}{2}$$ ∠A = 40°
In ΔBAD
∠BAD = 90° - ∠B
∠BAD = 90° - 70°
∠BAD = 20°
∠DAE = ∠BAE - ∠BAD
∠DAE = 40° - 20°
∠DAE = 20°
Related Questions on Triangles
If ABC and PQR are similar triangles in which ∠A = 47° and ∠Q = 83°, then ∠C is:
A. 50°
B. 70°
C. 60°
D. 80°
In the following figure which of the following statements is true?
A. AB = BD
B. AC = CD
C. BC + CD
D. AD < Cd
Join The Discussion