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Question

State whether the following is true or false.
sec A = 125 for some value of angle A.

A
True
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B
False
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Solution

The correct option is A True
Let a ΔABC in which B=90, AC be 12k and AB be 5k, where k is a positive real number.
By pythagoras theorem we get,
AC2=AB2+BC2
(12k)2=(5k)2+BC2
BC2+25k2=144k2
BC2=119k2
Such a triangle is possible as it will follow the pythagoras theorem.

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