Vector u has an initial point at (−5, 2) and a terminal point at (−7, 9). Which of the following represents u in trigonometric form?  a u = 7.28(cos 74.055°i + sin 74.055j)  b u = 7.28(cos 105.945°i + sin 105.945°j)  c u = 7.28(sin 74.055°i + cos 74.055°j)  d u = 7.28(sin 105.945°i + cos 105.945°j)

(a) State the sine rule and prove it in the case of an obtuse triangle.

1 An object is traveling around a circle with a radius of 11 centimeters. If in 30 seconds a central angle of radian is swept out, what are the linear and angular speeds of the object? The linear speed is v= (Type an integer or a simpli radians² / sec. cm²/sec. radians / sec. cm/sec. The angular speed is @= (Type an integer or a simplifie cm/sec. radians² / sec. radia /sec. cm²/sec.

2. If cos(0) = 0.6 , what are the coordinates of P ? Explain your reasoning. YA