90
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There's not enough info to calculate this. An angle with 30 / 60 / 90 can have a base, opp or hyp of any length. To find the area of an angle you need to know the angle and the length of the base, opposite or hypotenuse then apply Pythagoras theorm to find the size of the triangle. Then calculate the area by multiplying the base by the height, and then divide by 2.
You do not find are of an angle however an obtuse angle mesures greater than 90 degrees.
A central angle can subtend (form) an arc of a circle. That has an area of 2 x pi x r x (angle A) / 360.
the area referrers to the length and circumference of the triangle it self. The measurement matters to find the acute angle it self as a angle not a triangle
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