V has initial point (1,9) and terminal point (-4,-3) u=-15i+8j
w has ║w║=8 in the direction of 120°

Number nine is f(x)= 40x : ) hoped i ya

Hello! i hope this
since the cosine is the ratio of the adjacent side to the hypotenuse, you can see that cos 60° = ½. answer. according to the property of cofunctions (topic 3), sin 30° is equal to cos 60°. sin 30° = ½.