# acute angle

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acute angle - angle measuring less than 90 degrees

How many degrees is an acute angle
How many degrees is an acute angle An acute angle is an angle between 0 and less than 90 degrees: [B]0 <= a < 90[/B]

Reference Angle
Free Reference Angle Calculator - Calculates the reference angle for a given angle. Also known as the positive acute angle.

Triangles
Free Triangles Calculator - This lesson walks you through the basics of a triangle and shows you triangle types like acute, right, obtuse, scalene, isosceles, equilateral.

Trig Measurement
Free Trig Measurement Calculator - Given an angle θ, this calculates the following measurements:
Sin(θ) = Sine
Cos(θ) = Cosine
Tan(θ) = Tangent
Csc(θ) = Cosecant
Sec(θ) = Secant
Cot(θ) = Cotangent
Arcsin(x) = θ = Arcsine
Arccos(x) = θ = Arccosine
Arctan(x) =θ = Arctangent
Also converts between Degrees and Radians and Gradians
Coterminal Angles as well as determine if it is acute, obtuse, or right angle. For acute angles, a cofunction will be determined. Also shows the trigonometry function unit circle