Question

In △PQR, find the measure of ∡P. (will give medal)

Answer 1

30.4°

35.9°

59.6°

54.1°

Answer 2

I think you'll have to use right triangle trig.

Attached is a ratio refresher chart.

Answer 3

In this instance, sin P = QR/PR = 33.8/57.6

Answer 4

sin P = 33.8/57.6

@luka1998 Do you have a scientific calculator to crank out the the value of angle P from the equation?

Answer 5

yes i think the answer will be 0.5868

Answer 6

.5868 = 33.8/57.6 but there's more work to do. .5868 is not the angle P.

.5868 is the sine of the angle P

Answer 7

then how to solve it ?? can u plz explain it to me ???

Answer 8

Are you using a calculator? If not, we will use one that is online.

Answer 9

i'm using a calculator

Answer 10

Do you have an "arc" button on it, or an "inv" button on it?

Answer 11

On my calculator, I punch 33.8/57.6 = INV Sine and the answer pops up.
Be sure you have your calculator set for degrees.

Answer 12

nope i dont have the button

Answer 13

Just a second.

Answer 14

Click on this line and look at the way the problem was entered and scroll down for the answer.

http://www.wolframalpha.com/input/?i=arc+sin+%2833.8%2F57.6%29+%3D

Answer 15

You can also use the Google calculator.

Answer 16

oh so the answer will be 35.93

Answer 17

Yes. 35.9°


https://www.google.com/#q=2%2B3+%3D

Answer 18

thx

Answer 19

You are welcome.

Answer 20

can u help me in other question ??

Answer 21

Use △DEF, shown below, to answer the question that follows.

Answer 22

What is the value of x rounded to the nearest hundredth? Type the numeric answer only in the box below.

Answer 23

@Directrix can u help me ?

Answer 24

Which trig function will we need to use on this problem?

Answer 25

@Directrix is it tan ?

Answer 26

The tangent ratio does not involve the hypotenuse. It is the ratio of the opposite leg over the adjacent leg.

Tan (49) would give EF / x and we would have an equation with two unknowns.

So, try another of the trig functions, one which is the ratio of the adjacent leg to the hypotenuse.

Answer 27

cos

Answer 28

Yes, so cos 49 would be equal to ?/55

Answer 29

should i use the Pythagorean therom to find the hyp

Answer 30

cos (49 degrees) = x/55

Answer 31

will the answer be 83.8?

Answer 32

The Pythagorean Theorem will not help. You know only one side of the right triangle. 55^2 = (EF)^2 + x ^2 -->One equation with two variables. Dead end.

Answer 33

>>will the answer be 83.8? That could not be correct because in a right triangle, the hypotenuse is the longest side. The hypotenuse is 55. A leg of the same triangle cannot be 83.8; that is larger than the hypotenuse.

Answer 34

oh