Geometry trig

[Deleted member 4993]

W

write the ratio for tan M

Read CAREFULLY!!

It is asking you to calculate sin(M), cos(M) and tan(M) - all three.

By the way - you did not complete #12 yet [did not calculate cos(M) & tan(M)].

 

[rachelmaddie]

Have a go at #13 and we'll see if you are correct.

So 2√3/2

 

[Deleted member 4993]

So 2√3/2

What is that - sin or cos or tan?

How did you get that number?

Please read the problem carefully!

 

[rachelmaddie]

What is that - sin or cos or tan?

How did you get that number?

Please read the problem carefully!

Sin = opp/hyp

 

[rachelmaddie]

Sin = opp/hyp

So I would simplify that?

 

[Deleted member 4993]

Sin = opp/hyp

In this case:

What is opp = ?

What is hyp = ?

what is opp/hyp = ?

 

[rachelmaddie]

In this case:

What is opp = ?

What is hyp = ?

what is opp/hyp = ?

opp = 2
hyp = 4
adj = 2 √3
I’m sorry it is sin 2/4

 

[lev888]

opp = 2
hyp = 4
adj = 2 √3
I’m sorry it is sin 2/4

Math requires precision. "it is sin 2/4" is not clear. Do you mean "the answer is sin 2/4" or "sin is 2/4"?

 

[rachelmaddie]

Math requires precision. "it is sin 2/4" is not clear. Do you mean "the answer is sin 2/4" or "sin is 2/4"?

sin is 2/4

 

[Deleted member 4993]

sin is 2/4

Correct response should be:

sin(M) = 2/4

Now this answer can be simplified further....

 

[rachelmaddie]

1/2

 

[Harry_the_cat]

Rachelmaddie, let's start #13 again. Look at angle M, what is opp, adj and hyp.

 

[rachelmaddie]

Rachelmaddie, let's start #13 again. Look at angle M, what is opp, adj and hyp.

Did I do something incorrectly?

 

[Harry_the_cat]

Yes you did. List the opp, adj and hyp again.

 

[rachelmaddie]

Yes you did. List the opp, adj and hyp again.

2/4 was not correct?

 

[Harry_the_cat]

No. Just list opp, adj, hyp again and you should see why.

 

[rachelmaddie]

No. Just list opp, adj, hyp again and you should see why.

Opp = 2
Hyp = 4
Adj = 2√3

 

[pka]

I have been greatly concerned by this entire thread. rachelmaddie has posted that she does not understand function notation nor any functional notations. I worry that these replies can be or will be greatly detrimental to other students who may read this thread.,
Just read the thread. There is no evidence that rachelmaddie has any idea that \(\displaystyle \sin\) is short hand notation for the sine function. Much less that cosine and tangent are functions that are abbreviated \(\displaystyle \cos(x)~\&~tan(x)\).
It may well be that my concerns are entirely misplaced. But please think about them.

 

[Harry_the_cat]

Opp = 2
Hyp = 4
Adj = 2√3

Have another look at the diagram for #13. What is the length of the side OPPOSITE angle M?

 

[rachelmaddie]

I have been greatly concerned by this entire thread. rachelmaddie has posted that she does not understand function notation nor any functional notations. I worry that these replies can be or will be greatly detrimental to other students who may read this thread.,
Just read the thread. There is no evidence that rachelmaddie has any idea that \(\displaystyle \sin\) is short hand notation for the sine function. Much less that cosine and tangent are functions that are abbreviated \(\displaystyle \cos(x)~\&~tan(x)\).
It may well be that my concerns are entirely misplaced. But please think about them.

No, I do understand the notation. I have notes on how to apply these ratios. I don’t understand how to simplify the radicals.