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Earn +20 ptsQ: Express cos -155 as a function of a positive acute angle?
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What is cos of a negative angle?
The cosine function is an even function which means that cos(-x) = cos(x). So, if cos of an angle is positive, then the cos of the negative of that angle is positive and if cos of an angle is negative, then the cos of the negative of that angle is negaitive.
Is the complement of an acute angle an acute angle?
A complement of an acute angle must be an acute angle. An acute angle is an angle whose measure is more than 0 degrees but less than 90 degrees. For example, even if the angle was the minimum 1 degree, the complement is still 89 degrees, which is still acute. Therefore, any combination of a complement of an acute angle MUST be acute.
If an angle measures 60 is it?
An angle of 60 degrees is an acute angle
A shape with one right angle and one acute angle?
an angle with a acute and right angle
What is a name for a 83 degree angle?
It is an acute angle.
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