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nataly862011 [7]
3 years ago
8

Pls help!!

Mathematics
1 answer:
erik [133]3 years ago
7 0

Answer:

A

Step-by-step explanation:

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Given: tangent A = negative StartRoot 15 EndRoot What is the value of Tangent (A minus StartFraction pi over 4 EndFraction)?
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Answer:

( √15 + 8)/7

Step-by-step explanation:

TanA = -√15

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In trigonometry

Tan(A-B) = TanA - TanB/1+ tanAtanB

Hence:

tan(A-π/4) = TanA - Tanπ/4/1+ tanAtanπ/4

Substitute tan A value into the formula

tan(A-π/4) = -√15-tanπ/4 / 1+(-√15)(tanπ/4

tan(A-π/4) = -√15-1/1-√15

Rationalize

-√15-1/1-√15 × 1+√15/1+√15

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= -2√15-15-1/1-15

= -2√15 -16/(-14)

= -2(√15+8)/-14

= √15 + 8/7

Hence the required value is ( √15 + 8)/7

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3 years ago
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What value of k makes the statement true? <br><br> k + (–4.1) = –9.7
Ugo [173]
K + (-4.1) is the exact same as saying  k- 4.1, so what you have to do now is put the -4.1 in the opposite side, but with opposite sign too (+)
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5.6
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The ten students in a club are lined up in a row for a group photograph. How many different arrangements are possible if the clu
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It's 10!/3! so its 604, 800.

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Step-by-step explanation:

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Which expression can be used to convert 65in in meaters
Rainbow [258]

Answer:

idkcorsica

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idkhb4n4ut Henry

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