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3 years ago

Please help meconsult the image above

Mathematics

1 answer:

marin [14]3 years ago

5 0

Answer:

if we assume that

tan = opp/adj

then we can find the hypotenus by using phytagoras law

h² = o² + a²

h² = (m-1)² + (2√m)²

h² = m² - 2m + 1 + 4m

h² = m² + 2m + 1

then we factorized become

h² = (m + 1)²

h = m+1

so for sin x = opp/hyp = (m-1)/(m+1)

hope this can help you.

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3 years ago

Can someone help me with this?

Anna35 [415]

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Let 'a' be the first term, 'r' be the common ratio and 'n' be the number of terms

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$Sum = \frac{a( {r}^{n} - 1) }{(r - 1)} \\$

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$\frac{a( {r}^{n} - 1)}{(r - 1)} = 728 \\ \frac{2( {3}^{n} - 1) }{(3 - 1)} = 728 \\ \frac{2( {3}^{n} - 1) }{2} = 728 \\ {3}^{n} - 1 = 728 \\ {3}^{n}=728+1\\ {3}^{n} = 729 \\ {3}^{n} = {3}^{6} \\ \boxed{ n = 6}$

Therefore, number of terms is 6

6 is the right answer.

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2 years ago

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grigory [225]

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2 years ago

Please help meconsult the image above​

Please help meconsult the image above