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a, b, c are the length of sides BC, CA,...

a, b, c are the length of sides BC, CA, AB respectively of `DeltaABC` satisfying `log(1+(c )/(a))+log a-log b=log2`.
Also the quadratic equation `a(1-x^(2))+2bx+c(1+x^(2))=0` has two equal roots.
. Measure of angle C is :

A

`30^(@)`

B

`45^(@)`

C

`60^(@)`

D

`90^(@)`

Text Solution

Verified by Experts

The correct Answer is:
D
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