Cos angle = adj/hyp
3 is the adj, -4 is the opposite, so use Pythagorean theorem to find the hypotenuse.
3^2 + (-4)^2 = c^2
9 + 16 = c^2
25 = c^2
5 = hyp
Cos angle = 3/5
To find angle use cos^-1
Cos^-1 (3/5) = angle
Angle =
53.1 degrees
Vectors are orthogonal, when dot product
Vectors
and
are orthogonal.
Answer:
a=-13/10
b=-5/2
Step-by-step explanation:
Answer: 1.3125
Step-by-step explanation: Rise over run so 21/16, which if you open up your calculator you can divide 21 by 16 and your answer is 1.3125. Have a great day and message me with any more questions!
Answer:
1/16 chance
Step-by-step explanation:
so flipping a tail once is 1/2
so since if we want 4 in a row then multiply 1/2 4 times.
you‘ll get 1/16
so 1/16