Question

Can you check a little of my work, ill post a pic of them answers just make sure their right @Mertsj so I can give you a medal

Answer 1

Post it and we'll see.

Answer 2

The definition of cosine is side adjacent over hypotenuse. Look at your first problem. Which side is adjacent the angle theta?

Answer 3

You might want to try entering 5/12 instead of the rounded off decimal fraction. First, plese look at the illustration and ask yourself what 5 and what 12 represent.

Answer 4

adjacent is 5 and hypotenuse is 13

Answer 5

Ok. The cavalry has arrived. Good luck.

Answer 6

You two make a great team!

Answer 7

Who?

Answer 8

You and Mertsj. I mean that in the most positive sense.

Answer 9

Lol oh okay, can you help me ?? I cant afford to get these wrong, which ones do I have right?

Answer 10

the more you can show me your work, the more I'd be willing to give you feedback.

Answer 11

Ok for the first one: 5 adjacent-12 opposite-13 hypot. .... so I did 5/13 because thats what you have to do for cosine

Answer 12

True, but I'd much prefer that you remember and vocalize this as "the cosine of an angle is the ratio of the side of the triangle adjacent to the angle to the hypotenuse of the triangle,"
or just

cos theta = adj/hyp.

Answer 13

so the answer is .38?

Answer 14

Have you any way of photographing your work and posting the image here? I'd prefer not to give you "right" or "wrong" answers, but yes, 5/13 does equal roughly 0.38.

Answer 15

thats this one

Answer 16

How many decimal places does your instructor want in answers?

Answer 17

She doesnt say.

Answer 18

What a nice illustration! Hey, Nic, please apply what you know about sin functions to find the sine of this angle theta.

Answer 19

.92?

Answer 20

Looks OK. Please type in the proper fraction that represents opp/hyp.

Answer 21

12/13?

Answer 22

Perfect. I'd prefer proper fraction answers because it shows me what you've done. Nice work. What is the tangent of this angle theta?

Answer 23

12/5=2.4

Answer 24

Great. Keep up the good work!
Next question?

Answer 25

Hold on let me solve it

Answer 26

Not mandatory, but if you could type in your work, or take a photo of your work and share the image, I'd be happiest.

Answer 27

I'm going to take a different tack here:
I ask you to identify the values of the :
opp side
adj side
hypotenuse
formula for sine

Answer 28

opp- 15
adj-8
hypot.-17
opp/hypot or 15/17=.88

Answer 29

@mathmale

Answer 30

Nice work. Again, the more I see of your actual work, the more I can do for you in return.
New problem?

Answer 31

You're so helpful thank you so much and yes hold on

Answer 32

I think this is right?

Answer 33

Mind explaining your reasoning?

Answer 34

Can you explain your reasoning using the word "similar"?

Answer 35

Uh I am just going off another one I had like that, I dont really understand it?

Answer 36

This is a strange math problem in that the original triangle is expanded/stretched, not "dilated' (UNLESS, of course, I have rocks in my head).

If I give y ou a triangle and you make every side twice as long as before, the angles in question do not change, and the 2 triangles are called "similar." Have you heard of this before?

Answer 37

oh okay yeah

Answer 38

Its the same triangle so I am guessing it would still be 22/5 even if it was bigger?

Answer 39

so my last comment pretty much answers this question. What's your conclusion? It's not the same triangle, but the 2 triangles are definitely "similar" in the mathematical sense, so yes, 22/5 is the tangent function value.

Answer 40

Okay and I am lost on this one

Answer 41

The tangent of an angle is the ratio of opp to adj, and while those may change as the triangle gets bigger or smaller, their ratio doesn't!

Answer 42

Waiting for y our diagram to load; loading is very slow

Answer 43

Okay no prob

Answer 44

this question has to do with "cofunctions." The cosine is the "cofunction" of the sine.
The principle involved here is that sin A = cos (90-A).
So, sin 60 = cos (90-60) = cos 30.

Answer 45

With this in mind, pleasae reread the qeustion anx see whther you can come up with the correct choice yourself. Forgive the misspellings; i'm aiming for speed more thn accuracy at the moment. :)

Answer 46

30 ; 1?

Answer 47

the proper name for this is "complementary angles."

Answer 48

In the original problem, the given angle is 30 degrees. Have you subtracted that from 90 degrees? you need the "complement" of 30 degrees.

Answer 49

60 degrees?

Answer 50

right.

Answer 51

and the second part is 1/2 ???

Answer 52

sin 30 is 1/2, according to the problem statement.

Therefore, cos ( ?? ) = 1/2

Answer 53

See, the ratios (1/2 and 1/2) remain the same, but the function changes and the angle changes.

sin 30 is 1/2, so cos ( ??? ) = 1/2.

Answer 54

60 ; 1/2?

Answer 55

You've already typed in the correct responses, but what the heck, please identify the missing angle again.

sin 30 is 1/2, so cos ( ) is also 1/2.

Answer 56

Right. perfect. Make sense now?

Answer 57

Yessss rhank you so much!! I am going to takae the next assesment so I might need help or need u to check them

Answer 58

Two angles that add up to 90 degrees are "complementary."
Two that add up to 180 degrees are "supplementary." Youll see these also.

Answer 59

Happy to do it! Just remember that i'm more interested in how you obtain your answers than I am in the answers themselves.

Answer 60

Need help with this! Last one sorry @mathmale

Answer 61

Nothing to be sorry about! You're doing well and i feel appreciated!

Answer 62

@mathmale
How do we know this isn't a test you are doing for someone?

Answer 63

It is not a test I can confirm that!! I am doing them by myself, I only need help with the ones I really cannot figure out

Answer 64

I'll let Nic speak for himself.

Answer 65

I am a girl lol :-)

Answer 66

Thanks again :))) @mathmale I ended up getting it

Answer 67

I greatly enjoyed working with you! Keep up the good work! MM

Answer 68

Thank you, Ill try