The answers will do, you dont have to explain all, i know them but want to be sure of my answer

5. [-/1 Points] DETAILS LARCALC11 11.3.028 1. [-/1 Points] DETAILS LARCALC11 11.3,007. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER The vertices of a triangle are given. Determine whether the triangle is an acute triangle, an obtuse triangle, or a right triangle. {-3, 0, 0), (0, 0, 0), (4, 2, 3) Find u - v. u . u, ||w|2, (u - viv, and u . (3v) O an acute triangle u - (2, -2, 5), v = (D, 6, 3) O an obtuse triangle a) u - v a right triangle Need Help? Read It (b) u - u 6. [-/1 Points] DETAILS LARCALC11 11.3.031. (d) (u . viv MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Find the direction cosines and angles of u and show that cost a + cus s + cosy = 1. (Round your answers for the angles to four decimal places.) (e) u - (3v) u = i + 8j + 4k Need Help? Rand It Watch COS Q cusred cos y 7 = rad 2. [-/1 Points] DETAILS LARCALC11 11.3.016. Need Help? Read My Watch MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Find the angle & between the vectors in radians and in degrees. u = 7i + 4j + k v - 41 - 73 7. [-/1 Points] DETAILS LARCALC11 11.3.039. (a) radians MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER e - Consider the following. [b) degrees w = 5i + 3j, w = 4i + 9j 8 - (a) Find the projection of u onto v. Need Help? Read It Watch (b) Find the vector component of u orthogonal to v. 3. [-/1 Points] DETAILS LARCALC11 11.3.020. Need Help? Read It Watch It MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Use the alternative form of the dot product to find u . v. |lull = 35, liv|| = 30, and the angle between u and v is 5/6. 8. [-/1 Points] DETAILS LARCALC11 11.3.054. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Need Help? Read It Find two vectors in opposite directions that are orthogonal to the vector u. (The answers are not unique. Enter your answer as a comma-separated list of vectors.} u = (3, -2, 6) 1. [-/1 Points] DETAILS LARCALC11 11.3.023. Need Help? Read It MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER Determine whether u and v are orthogonal, parallel, or neither. u = j + 5k 9. [-/1 Points] DETAILS LARCALC11 11.3.061. v = i - 4j - k MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER parallel " orthogonal car is towed using a force of 1800 newtons. The chain used to pull the car makes a 229 angle with the horizontal. Find the work O neither done in towing the car 7 kilometers. (Round your answer to one decimal place.) km-N Need Help? Anad It Watch Need Help? Read It Watch It