If the vectors u = and v=<2,-3>are orthogonal .Find the value of a a) 4
b)2
c)-9
d)9

answer

d. 10

explanation

the distance from point y to wx is the height of the triangle.

using pythagoras theorem,

group similar terms to get,

this implies that,

take positive square root of both sides to get,

this implies that,

y=sec x is the correct answer

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you could deduce the conclusion directly using the facts pertaining to the specific situation.

hope this .