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saveliy_v [14]
2 years ago
11

Whats the nth term of 13, 20, 27, 34...

Mathematics
1 answer:
tangare [24]2 years ago
5 0
I believe 20 i don’t rrly know
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Law of cosines: a2 = b2 + c2 – 2bccos(A) What is the value of n to the nearest whole number? 18 22 29 41
nalin [4]
We know that
applying the law of cosines
a² = b²+ c²<span> – 2*b*c*cos(A)
</span>
in this problem
a=?
b=20
c=9
A=90°
so
a² = b²+ c² – 2*b*c*cos(A)
but
cos (A)=0
a² = b²+ c²-----> 20²+9²----> a²=400+81----> a²=481-----> a=√481
a=21.93-----> a=22

the answer is
22

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3 years ago
PLEASE HELP!!!!!!!!!!!!!!!!!!!!!!!!
charle [14.2K]

Answer:

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