CALCULUS

FOR EACH PAIR OF LINES, DETERMINE SIZE OF ACUTE ANGLE, TO THE NEAREST DEGREE, THAT IS CREATED BY INTERSECTION OF LINES.:--Y = 0.5X+6 AND Y=-0.75X-1

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  1. y = 0.5x + 6 makes an angle
    arctan 0.5 = 26.57 degrees with the x axis. It slopes upward.

    y = -.75x -1 makes and angle arctan -0.75 = -36.87 degrees with the x axis (It slopes downward)

    The sum of those two angles is the acute angle between them. 63.44 degrees.

    Round it to 63 degrees.

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    posted by drwls

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