Question

PLEASE HELP WHAT IS THE ANSWER SHOW WORK PLEASE !!!

Answer 1

D = 1.4, N =

Explanation:

To get D you need to find the cosine of 63 degrees

Cosine(63) = D / 3.1

Multiply by 3.1 to isolate D :

3.1Cosine(63) = D

Put it into a calculator and you'll get 1.4.

Also, it's a 45-45-90 triangle so the 2 legs will be equal to each other.

Proof: To get N put you have to do the tangent of 45 degrees

Tan(45) = 7 / N

Now you can't to do this you have to multiply the both sides by N

N(tan(45)) = 7

Then divide both sides by (tan(45))

N = 7 / (tan(45)

Put it into the calculator and you'll get

Answer 2

d = 6.1m

n = 7km

Explanation:

To find the variables, use tan

⇒ tan =
`(opposite)/(adjacent)`

finding d:

⇒tan 63 =
`(d)/(3.1)`

tan of 63 is 1.963

⇒ 1.963 =
`(d)/(3.1)`

multiply 3.1 on both sides

⇒ 1.963 x 3.1 =
`(d)/(3.1)` x 3.1

⇒ 6.0853 = d

round to the nearest tenth:

⇒ 6.0853 = 6.1

finding n:

⇒ tan 45 =
`(7)/(n)`

tan of 45 is 1

⇒ 1 =
`(7)/(n)`

multiply 7 on both sides:

⇒ 1 x 7 =
`(7)/(n)` x 7

7 = n