When rotating a point 90 degrees counterclockwise about the origin our point A(x,y) becomes A'(-y,x). What is the rule for a 90 counterclockwise rotation? The new position of point M (h, k) will become M' (k, -h). Rotation of point through 90° about the origin in clockwise direction when point M (h, k) is rotated about the origin O through 90° in clockwise direction. This produces a gentle updraft, which forces warm air near the ceiling down into the occupied space. In the winter, reverse the motor and operate the ceiling fan at low speed in the clockwise direction. Using the Ceiling Fan Year Round The airflow produced creates a wind-chill effect, making you 'feel' cooler. Typical nuts, screws, bolts, bottle caps, and jar lids are tightened (moved away from the observer) clockwise and loosened (moved towards the observer) counterclockwise in accordance with the right-hand rule.ĭoes ceiling fans use a lot of electricity?ĭo Fans Use a Lot of Electricity? Running a fan takes a lot less electricity than running an air conditioner ceiling fans average at about 15-90 watts of energy used, and tower fans use about 100 watts. Starting from the top, a hand moving clockwise would move to the right-hand side. Is clockwise to the right? Clockwise involves a turn to the right as it follows the hands of a clock. If the rotation is clockwise, the angle has a negative measure. If the rotation is counterclockwise, the angle has a positive measure. Positive and Negative Angles The measure of an angle describes the magnitude and direction of the rotation of the ray from its initial position to its terminal position. Counterclockwise is the positive rotation direction and clockwise is the negative direction. The rotation of a clock's hands is the reference for defining rotational direction. In other words, switch x and y and make y negative. What is the rule for a 90 degree counterclockwise rotation?ĩ0 Degree Rotation When rotating a point 90 degrees counterclockwise about the origin our point A(x,y) becomes A'(-y,x). 270° counterclockwise rotation: (x,y) becomes (y,-x).270° clockwise rotation: (x,y) becomes (-y,x).180° clockwise and counterclockwise rotation: (x, y) becomes (-x,-y).90° counterclockwise rotation: (x,y) becomes (y,x).90° clockwise rotation: (x,y) becomes (y,-x).What are the rules for clockwise rotations? Here are the rotation rules: Most screws and bolts are tightened by turning them clockwise. The hands of a clock always move towards their right and hence, the term 'clockwise' explains itself. Let us understand the meaning of this term now. Ceiling fan direction winter = clockwise (updraft)Ĭlockwise refers to moving in the direction of the hands of the clock.Ceiling fan direction summer = counterclockwise (downdraft).

Counter clockwise direction