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nekit [7.7K]
3 years ago
7

Pls help idek what this is

Mathematics
2 answers:
madreJ [45]3 years ago
6 0
The answer is gonna be B
zlopas [31]3 years ago
6 0
** The answer is B **

Edit: I explained complete garbage math, the answer is actually B


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loris [4]

Solution: The missing reason in Step 8 is substitution of x=c\cos (A).

Explanation:

The given steps are used to prove the formula for law of cosines.

From step 5 it is noticed that our equation is

a^2=b^2-2bx+c^2      ..... (1)

From step 7 it is noticed that the value of x is c\cos (A).

So by substituting c\cos (A) for x in equation (1) we get the equation of step 8, i.e.,

a^2=b^2-2bc\cos (A)+c^2

Hence, the missing reason in Step 8 is substitution of x=c\cos (A).



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3 years ago
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Step-by-step explanation:

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3 years ago
What is 18 percent of 28 dollars
bixtya [17]
If something costs $28<span> and is on sale for </span>18<span>% off, then how much would it cost?
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The owner of The Pizza Palace has a deal offering 1 free order of breadsticks with 3 pizzas. If 24 total pizzas were sold with t
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3 years ago
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