Solve the problem. Find the area of the triangle determined by the points P(-3, 6, -4), Q( 2, 10, -9), and R(8, 5, -8). HINT: Consider the vector PQ and PR. Write the standard position. of the cross product represent the area of the parallelogram. And the are of triangle is half of the are of parallelogram. Use calculator as necessary. O 7/83 O 783 O 13/43 O 13 /43

Q: 39. Given a = (3, -4) and b = (1, 2). Find the vector 2 a. (3,4) a. b. 2,4) c. (6,-8) d. (5,-2)

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Q: e distance between 2u and-30.F

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A: To find the component of a in the direction of b