Question

In ∆ABC, ∠A=90° a perpendicular AD is drawn from A on BC. If BC=10cm , BD= 2cm then the length of AD is equal to:​

Answer 1

Answer:

hi

Step-by-step explanation:

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Answer 2

Answer:

hi

Step-by-step explanation:

Given Data, ∠A = 90°, hence it is a right angles triangle.

Hence the line coming from angle ∠A perpendicular to its hypotenuse BC divides BC equally. I.e. BD = DC.

Therefore CD = 2cm.

To verify this we use the formula, Square of perpendicular = Product of segments

AD = perpendicular and BD, CD are the segments

⇒AD2=BD×CD⇒22=2×CD⇒CD = 42=2cm

Hence, CD = 2cm.

Therefore Option D is the correct ans