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3 years ago

I don’t know how to do this guys someone help me plz

Mathematics

2 answers:

Anna35 [415]3 years ago

5 0

Answer:

30°

Step-by-step explanation:

I don't know what you've been taught, but I'll explain how I did it.

Upon looking at this, I thought, "at what angles is cosine √3/2?" Using a unit circle in my head, I thought of π/6 and 11π/6 (which are in radians, in degrees they are respectively 30° and 330°). Since x is acute (less than 90°), the answer must be 30° since that is the only one of the two that is acute.

BARSIC [14]3 years ago

4 0

Answer:

x = 30 degrees

Step-by-step explanation:

cos (x) = sqrt(3)/2

We need to take the inverse of each side

cos ^-1( cos x) = cos ^-1 (sqrt(3)/2)

x = cos ^-1 (sqrt(3)/2)

x = 30 degrees

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Ksju [112]

Answer:

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Step-by-step explanation:

we know that

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$A=P(1+\frac{r}{n})^{nt}$

where

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in this problem we have

Part 1)

$t=2\ years\\ P=\$2,000\\ r=0.04\\n=12$

substitute in the formula above

$A=2,000(1+\frac{0.04}{12})^{12*2}$

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Part 2)

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substitute in the formula above

$A=2,166.29(1+\frac{0.045}{4})^{4*2}$

$A=2,166.29(1.01125)^{8}$

$A=\$2,369.11$

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3 years ago

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alisha [4.7K]

Answer:

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Step-by-step explanation:

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