Question

plz help

Answer 1

To find b, you have to use the pythagorean theorem.

\[a ^{2}+b ^{2}=c ^{2}\]
So plug in the values you know and solve for what you dont know.
I'll start off...

\[7 ^{2}+b ^{2}=8 ^{2}\]
\[49+b ^{2}=64\]

Can you solve it from there?

Answer 2

yeah! that's right

Answer 3

how do i do this one???

Answer 4

Alright, so did you see my explaination for the other question you asked?
I answered it a few minutes ago. Its the same concept as this one, but i'll still help you with this one.

Answer 5

wait lemme check

Answer 6

alright, lemme draw out the picture.

Remember the 3 trig funtions are:

Sine = Opposite / Hypotenuse
Cosine = Adjacent / Hypotenuse
Tangent = Opposite / Adjacent

Which should we use here?

Answer 7

tan?

Answer 8

Yes, you would use tan here.

Then, to find the angle measurement, you'd find the inverse of tan which is:

\[\tan^{-1} \]