Measurement of antinuclear antibodies (ANAs) in serum is the most commonly performed screening test for patients suspected of having a systemic rheumatic disease, also referred to as connective tissue disease.(1) ANAs occur in patients with a variety of autoimmune diseases, both systemic and organ-specific.
How do you rotate a figure 180 degrees in anticlockwise or clockwise direction on a graph? Rotation of a point through 180Â°, about the origin when a point M (h, k) is rotated about the origin O through 180Â° in anticlockwise or clockwise direction, it takes the new position M' (-h, -k).Worked-out examples on 180 degree rotation about the origin:n plotting the points P (-3, 1) and Q (2, 3) on the graph paper to get the line segment PQ. Now rotate PQ through 180Â° about the origin O in anticlockwise direction, the new position of points P and Q is: P (-3, 1) â P' (3, -1). Q (2, 3) â Q' (-2, -3). Thus, the new position of line segment PQ is P'Q'.
Three-figure bearings. Imagine that you are in the middle of the ocean. You are lost and you cannot see any land. You radio for help and are told to turn 125Â° clockwise. But 125Â° from where? Which direction should you be facing in the first place? One sensible idea is to start by facing north. This is the way that 3-figure bearings work. Always start by facing north, and always move in a clockwise direction. Angles of less than 100Â° are written with a '0' in front, to make them a 3-figure bearing. For example, 060Â°, 021Â°. Finding the bearing of A from B. Here is an example. Imagine that you are at point B. You need to travel to point A. On which bearing should you travel?