# Trigonometric Ratios of 45Â°

Â

It is a right triangle if we take one angle as 45Â°, its other angle will also be 45Â°

[Since sum of all the angles of a triangle is 180Â°].

In Î” ABC,

âˆ A = âˆ C (= 45Â°)

â‡’BC = AB (= *a*)

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Â

It is a right triangle if we take one angle as 45Â°, its other angle will also be 45Â°

[Since sum of all the angles of a triangle is 180Â°].

In Î” ABC,

âˆ A = âˆ C (= 45Â°)

â‡’BC = AB (= *a*)

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