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zavuch27 [327]
2 years ago
10

Sin2A-sin2B+sin2C=4cosA×sinB×cosC​

Mathematics
1 answer:
Hoochie [10]2 years ago
3 0

Answer:

Step-by-step explanation:

mark as brainliest!!! this is not a video i sent a screenshot instead

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Provides a unique set of guidelines that can be applied to any triangle. The guidelines demonstrate a clear understanding of app
Oksi-84 [34.3K]

we can have a triangle  and we know that there are two angles. 

30º and a 45º + 105 =180º angle. applying the sides. 

therefore if we have the whole triangle completed we have a constant triangle. 


so it tell us we can you’se SOH CAH TOA 

we can varrify what kind of triangle we are using. 


for example if we were to use  Sin I would do 


Sin 30/ 2 = sin of 105º/ A = sin=45º/ B


if you would want to solve for  sin 30/2 and sin 105, then we solve. 

 

or Sin 30/2  and Sin 105 as well. 


with your calculator use sin= 30=.5  and use sin 105º a divide by 1.5 on both sides    1.5= A /sin 105º * 1.5   answer would be 3.86.  a is = to 3.86 (Not the answer)


5 0
3 years ago
Please help will mark brainliest<br>answer whatever you can​
Drupady [299]

Step-by-step explanation:

I am not allowed to answer more than 3 questions.  So I will do the first 3.

15a. i)  (2/3) = 4/9

      ii)  (2/3) = 8/27

      iii)  (2/3) = 16/81

  b.  The product is small because you are finding the fraction of a fraction.

16.  Compared to the factors, the product is less than each fraction.  This is because, as stated above, you are trying to find a fraction (a part of the whole) of another fraction.  When you multiply a whole number by a fraction, the whole number decreases.  The same applies to a fraction.

17a.  0.4 × 0.3 = 0.12

  b.  0.4 = 4/10 = 2/5

       0.3 = 3/10

       3/10 × 2/5 = 6/50

8 0
3 years ago
How do I solve this?
Yuki888 [10]
The answer is B. The values of y must only be positive because it is equal to
| - x|
The other options states that the values of y could be negative which is why it is wrong.
3 0
3 years ago
Draw an obtuse angle big. place a point p inside the angle. now construct perpendiculars from the point to both sides of the ang
never [62]

I have drawn three obtuse angles showing three different positions.

then taken a point p inside it.

Now to draw perpendicular from a point to a given line

we draw a line parallel fom that point to that given line.

After that from that point we draw perpendicular to that line.

Now the question arises which side is closer to point p ,

The answer is if length of perpendicular from p to the line is longer that side is farther from the point p , and if the length of perpendicular is shorter then that that line is nearer to point P.

8 0
3 years ago
I need help on those two!!!
larisa86 [58]

Answer:

8. B

9. A

Step-by-step explanation:

4 0
3 years ago
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