Draw the diagram. Using the law of cosines, if c = 4a+b, then
|c|^2 = 20^2 + 8^2 - 2*8*20 cos125°
|a| = 5, and b = 8, and the angle formed by a and b is 55°. Determine |4a + b|. Round
your answer to 2 d.p.
1 answer
your answer to 2 d.p.
1 answer
1 answer
1 answer
1 answer
1 answer