3. Verify the identity csc u sinu = cot u cosu 4. You are given that angle u is in standard position and is in the second quadrant with tanu = %. You are also given that angle 11: is in standard position and is in the fourth quadrant with sinw = E. (a) Draw the two angles and their corresponding right-angled triangles on axes below. Angle u and its right-angled triangle Angle w and its right-angled triangle (b) Each triangle in part (a) has a side whose length is not known. Calculate each one of those lengths. {c} In this part of the question, a and w are the angles you drew in part (a). Determine the exact value of each one of the following, (in each case show your work): i. sin (to + u} ii. tan 2n iii. cos w