Cast Diagram Negative. In degree mode the calculator or algebra coach gives θ pv arccos 0 4 113 6 the symmetry of the diagram gives θ 2 360 113 6 246 4 thus the answers are 113 6 and 246 4. Draw this angle onto your cast diagram.
In degree mode the calculator or algebra coach gives θ pv arccos 0 4 113 6 the symmetry of the diagram gives θ 2 360 113 6 246 4 thus the answers are 113 6 and 246 4. So if you want to find sinx 0 5 x is 30 from your calculator. Positive in quadrants 1 2 above the x axis negative in quadrants 3 4 below the x axis repeating the above for cosine tan a cast diagram can be drawn.
All you have to remember is that all the trig functions are positive in quadrant 1 and the diagram tells you what is positive.
Positive in quadrants 1 2 above the x axis negative in quadrants 3 4 below the x axis repeating the above for cosine tan a cast diagram can be drawn. The other two trig fractions are negative. From the above diagram the sine wave is. In the third quadrant only the values for tan are positive.
