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3 years ago

5

Cos(x) = 2.3 how do I find x?

1 answer:

mote1985 [20]3 years ago

7 0

I don't think you can find x in this case. Cosine can only go as low as -1 and as high as 1. Since 2.3 is more than 1, the answer does not exist

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Both fractions in the expression of 1/3 +1/3 are examples of...

kirza4 [7]

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2 years ago

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tigry1 [53]

The answer to your question is 5 and 1.

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liberstina [14]

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Using the sine rule:
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3 years ago

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krek1111 [17]

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1 year ago

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Find the determinant of the following matrix. A =<br>-2 6<br>3 5

Blababa [14]

Answer:

$|A| = - 28$

Step-by-step explanation:

Given

$A = \left[\begin{array}{cc}-2&6\\3&5\end{array}\right]$

Required

Determine the determinant

For a two by two matrix, A such that:

$A = \left[\begin{array}{cc}a&b\\c&d\end{array}\right]$

The determinant |A| is:

$|A| = a * d - b * c$

So, in

$A = \left[\begin{array}{cc}-2&6\\3&5\end{array}\right]$

The determinant is:

$|A| = -2 * 5 - 6 * 3$

$|A| = -10 - 18$

$|A| = - 28$

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2 years ago