Question

find the value of a it p=3i+5j and q=ai+3j are perpendicular to each other.​

Answer 1

Answer:

a = -5

Explanation:

we can write equation in format, y=mx+b,, so

j = (-3/5) i + p/5 ----- m = -3/5

j = (-a/3) i + q/3 ----- m = -a/3

Since, two equations are perpendicular to each other,

So, product of their slope is - 1,

-3/5 × -a/3 = -1

3a = -15

a = -5

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