Find the area of the triangle determined by the points P, Q, and R. Find a unit vector perpendicular to plane PQR P(1, - 1,2), Q(2,0, - 1), R(0,2,1) The area of the triangle is (Type an exact answer, using radicals as needed.) Choose the unit vectors perpendicular to plane PQR. 1 O A. (i+ 2j + k) 1 В. + (2i + j+ k) V6 1 O C. ± (7i + 11j + k) 3 19 OD. ) V5 (i +j)

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Q: Preform the indicated Operations for the given vectors. v= w= s= r= s+w

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Q: Find the area of the triangle determined by the points P, Q, and R. Find a unit vector perpendicular…

A: The area of the triangle is

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A: two vectorsu→=u1i+u2j  and v→=v1i+v2j are said to be orthogonal if u1 v1 +u2 v2=0

Q: Find 9a + 76, la, and la -6. (Simplify your vectors completely.) a=9i8j+7k, b =77-9k

A: Since you have asked multiple questions, we will solve the first question for you.If you want any…

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A: Given a = i + j b = i - k c = i - 7k