Question

PLEASE HELP on T or F, MEDAL+FAN
Which statement is True?
in any right triangle, the sine of one acute angle is equal to the cosine of the other acute angle.

In any right triangle, the sine of one acute angle is equal to the sine of its complementary angle.

In any right triangle, the cosine of one acute angle is equal to the cosine of its complementary angle.

In any right triangle, the sum of the sine of one acute angle and the cosine of the other acute angle is 1.

Answer 1

is it A?

Answer 2

I believe so

Answer 3

No its not
http://mathbitsnotebook.com/Geometry/Trigonometry/TGTrigSineCosine.html

Answer 4

The sine of any acute angle is equal to the cosine of its complement.

Answer 5

Isn't that what choice A is saying????

Answer 6

What is A

Answer 7

Note that the acute angles of a right triangle are indeed complementary.

Answer 8

in any right triangle, the sine of one acute angle is equal to the cosine of the other acute angle.
This?

Answer 9

if it is it is the answer is B

Answer 10

Yes, the two angles add up 90 degrees in a right triangle.

Answer 11

Read all choices very carefully.

Answer 12

whats wrong with B then? Im pretty sure its not D

Answer 13

Me too

Answer 14

Does sin 40 degrees = sing 50 degrees ???? That is what choice B is saying!

Answer 15

*sing = sin lol.

Answer 16

ohh, lol. Alright ,alright so we have A and C left.

Answer 17

C is saying cos 40 degrees is equal to cos 50 degrees. Just as wrong as B.

Answer 18

Then it twas A?

Answer 19

The link furnished by Mtblue7 is a very good one, review it and you will answer this question easily.

Answer 20

okay, thank you! You're actually one of the few people who knows about Cos,Tangent,Sin, who deserves the medal though?

Answer 21

A is saying Sin 50 degrees is equal to Cos 40 degrees. You can verify that with your calculator.

Answer 22

Or read the link.

Answer 23

I don't need the medal, Mtblue7 did give you a good link, but did not agree with your original A choice. The link was worth a medal.

Answer 24

they both equal to 1...

Answer 25

What "both" of them ??

Answer 26

its B

Answer 27

thanks for the help

Answer 28

Please review the answers and see if what they are saying is true.
Please review my post Does Sin 40 degrees + Sin 50 degrees (the complementary of 40) check that out and you will find out that is false.

Answer 29

That is what Choice B is stating.

Answer 30

Here is what my calculator is showing
Sin 40 = .64278
Sin 50 = .76604
That does not look equal to me.

Answer 31

Your original thinking was good, don't let Mtblue7 change your mind.

Answer 32

Have you checked out the link???

Answer 33

oh alright, i got confused because im not very good at geometry. So isn't c wrong to because it saying one the angles is the same as 90 degree angle ,which would be wrong right?

Answer 34

I'm doing this online course, we can only get one wrong so i have to be careful.The course got me really confused on Tangent, Cos,Sin.

Answer 35

Here is what C. said: "In any right triangle, the sum of the sine of one acute angle and the cosine of the other acute angle is 1." Check that out. Now please suggest a value for one of the acute angles in a right triangle. Give me the measure of that angle in degrees.

Answer 36

It is you choice, it can be any value from 1 to 89 degrees.

Answer 37

60

Answer 38

well i got 1.366025404

Answer 39

Good choice, since a right triangle like any triangle, the sum of all angles will be 180 degrees, since the right angle is 90 the sum of the two acute angles will also be 90 (or complementary).
You gave me 60 for one acute angle, then the other has to be 30 degrees. Do you follow that logic?

Answer 40

oh oh lol, my mistake! Yea, i was just trying to help, os you dont do all the work. Brb i have to go on a break on summer school ill be back in 10 min or so help me thenplease

Answer 41

I have to be gone also. Lets check out C.
Sin 60 = .8660
Cos 30 = .8660 Their sum is: 1.7320 this is not 1, that alone should convince you that C is not a good choice. Go back and check A. Your original choice. Good luck with this.