cosina ( synonym found)
Definition of cosina:

°In a right triangle, the ratio of the length of the side adjacent to an acute angle to the length of the hypotenuse. Symbol: cos.
°The x coordinate of the point on the unit circle at the given anticlockwise angle from the x axis.
Definition of cosina:

°In a right triangle, the ratio of the length of the side adjacent to an acute angle to the length of the hypotenuse. Symbol: cos.
°The x coordinate of the point on the unit circle at the given anticlockwise angle from the x axis.
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