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Question

The construction of a ABC, given thatBC=3cm,C=60° is possible when difference of ABandAC is equal to:


A

3.2cm

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B

3.1cm

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C

3cm

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D

2.8cm

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Solution

The correct option is D

2.8cm


Explanation for correct option : (d)

Step 1: Given data:

As per data given in the question,

We have,

BC=3cmandC=60o

Step 2: Rules for constructing a triangle:

Since, we know that the sum of two sides of a triangle is greater than the third side.

So,

AC+BC>ABAC+3>AB3>ABAC

Therefore, the difference between ABandAC should be less than 3.

Thus option (d) is correct, cause 2.8<3.


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