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The GCF is 45.
The statement of the problem is equivalent to sin x = - cos x. This is true for x = 135 degrees and x = -45 degrees, and also for (135 + 180n) degrees, where n is any integer.
Absolute value of -135 is 135.
Since the integer part is the same (zero vs. zero), compare the FIRST decimal digit. The number with the larger decimal digit is the larger number.
135