the ladder is 2.5 m away from the wall, find the length of the ladder.
10. In the given figure, AB and AC are tangents to the circle with centre O such that
ZBAC = 40°. Then calculate ZBOC.
B
A 40°
o
C
Answers
Answered by
1
Answer:
Option C
Step-by-step explanation:
Tangent is perpendicular to radius at point of contact.
So, ∠ABO=∠ACO=90
∘
In a quadrilateral, the sum of the angles is 360
∘
.
∠BAC+∠BOC+∠ABO+∠ACO=360
∘
∴∠BAC+∠BOC=180
∘
∠BOC=180
∘
−40
∘
∠BOC=140
∘
So, option C is the answer
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