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Step-by-step explanation:
angle A = 180-70-20 = 90°
given,AN is the bisector of angle A
so Angle NAC = anglaA/2 = 90/2 = 45°
angle MAC = 180-90-20 = 70°
angle MAN = angle MAC - angle NAC
70° - 45° = 25° Answer
Answered by
4
Answer:
In triangle ABC,
BAC = 180° - 70 - 20 = 90°
BAN = NAC = 45° [ Angle Bisectors]
In triangle BAN,
70° + 45° + ANB = 180°
ANB = 180°- 115° = 65°
In triangle MAN,
MAN + 90° + 65° = 180°
MAN = 180° - 155° = 25°
Angle MAN = 25°
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