Question

in a rectangle ABCD a b is equal to 20 cm and angle BAC is equal to 60 degree then calculate BC

Answer 1

here is your answer,

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in ∆ BAC

as angle is 90°

so ,

Tan 60° = BC/AB

√3=BC/20

BC= 20√3 cm

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Answer 2

answer is 20√3 cm , hope it helped