area=(1/2)*base*height
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The area of a right angle is nothing bro, if you mean the area of a right angle triangle then uts simple formula is : 1/2×Base×Height(Perpendicular of the right angled triangle) Alternative method: Heron's formula!
right angle triangle
A right angle triangle has an hypotenuse which is its longest side, an adjacent side and an opposite side.
It means the ratio of the opposite angle to the hypotenuse of a triangle for angle "x". This is for a right triangle.
The sine of an angle in a right triangle is the ratio of the length of the side opposite the angle to the length of the hypotenuse.In terms of ratios, the sine of an angle is defined, in a right angled triangle, as the ratio of lengths of the opposite side to the hypotenuse.