Mathematics: The cosine lawhow do i figure out which formula i d use for this question? b= 88 degrees, a= 31.5m, c= 25.6, b= 39. 9

The cosine lawhow do i figure out which formula i

Ответ:

juliah6925

06.01.2022

$\bf \textit{Law of sines}
\\ \quad \\
\cfrac{sin(\measuredangle A)}{a}=\cfrac{sin(\measuredangle B)}{b}=\cfrac{sin(\measuredangle C)}{c}\\\\
-------------------------------\\\\$

$\bf \cfrac{sin(88^o)}{39.9}=\cfrac{sin(A)}{31}\implies \cfrac{31\cdot sin(88^o)}{39.9}=sin(A)
\\\\\\
sin^{-1}\left[ \cfrac{31\cdot sin(88^o)}{39.9} \right]=sin^{-1}\left[ sin(A) \right]
\\\\\\
sin^{-1}\left[ \cfrac{31\cdot sin(88^o)}{39.9} \right]=\measuredangle A
\\\\\\
50.93841^o\approx \measuredangle A\qquad thus\qquad \measuredangle C\approx 41.0619^o$

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Ответ:

tatyananannanana

01.01.2021

Mathematics

1) m=-2

2) C) y=-3/4x -6

3) D) y=2/5x-2

I don't understand 4 nor 5. My apologies.

6) Parallel

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The cosine law

how do i figure out which formula i'd use for this question?

b= 88 degrees, a= 31.5m, c= 25.6, b= 39. 9

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The cosine lawhow do i figure out which formula i'd use for this question? b= 88 degrees, a= 31.5m, c= 25.6, b= 39. 9

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The cosine law

how do i figure out which formula i'd use for this question?

b= 88 degrees, a= 31.5m, c= 25.6, b= 39. 9