karlar2 karlar2
  • 28-11-2018
  • Mathematics
contestada

Let → a = ⟨ 1 , − 3 ⟩ and → b = ⟨ − 3 , k ⟩. Find k so that →a and → b will be orthogonal (form a 90 degree angle).

Respuesta :

gavin61101
gavin61101 gavin61101
  • 28-11-2018
if a b is orthogonal , a•b will be 0
a•b=1x-3+-3k=0
so k=-1
Answer Link

Otras preguntas

What must be true about the sum of any two sides of a triangle? A) The sum of the lengths of two sides must be greater than the length of the third side. B) The
Combine the sentences into one sentence
Write a system of equations with (4, - 5) as its solution.​
Which country was under the rule of France, based on this map of European colonialism in Africa?​
Write an equation in slope-intercept form of the line that passes through (4.-4) and (9,1)
Use the graph to help you answer the questions. Choose the correct answers from the drop-down menus. In the 1960s, most immigrants came from .
60 points! please help me! i will appreciate it
The osmothčque in france is a specialized library of what?.
Does anyone know how to put these into a food web?Coyote, Elderberry Bush, Field Mouse, Fox, Frog, Grasshopper, Hawk, Jack Rabbit, Meadowlark, Mosquito, Mule De
Find the perimeter of the polygon with the vertices H(3, 2), I(5, 2), J(5, 7), K(3, 7).