Answer:
180
Step-by-step explanation:
Step-by-step explanation:
6:8=9:12=12:16=15:20
Answer:
10
Step-by-step explanation:
Answer:
11
Step-by-step explanation:
w=11
I hope this helps
(15-4) = 11
Answer:
b)0, yes
Step-by-step explanation:
Given:
Vectors (4,8) . (6,-3)
Finding inner product of vectors:
= 4x6 + 8x-3
=24-24
=0
Now to check the angle between them using formula a.b=|a|.|b|cosθ
|a|=
=8.9
|b|=
=6.7
Putting values of a.b=0 and |a|=8.9, |b|=6.7 in a.b=|a|.|b|cosθ we get,
0= 8.9(6.7)cosθ
cosθ =0
θ=90 degrees
Hence the two vectors are perpendicular !