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svp [43]
3 years ago
12

PLEASE HELP ME ANSWER THIS What is cos 60?

Mathematics
2 answers:
Anna71 [15]3 years ago
5 0

Answer:

The angle with measure 60° is one of those angles that has a well-known cosine value: cos(60°) its C= 1/2.

Step-by-step explanation:

8_murik_8 [283]3 years ago
3 0
Cos(60°) =[0; 2] and cos^2=[0; 4] so cos 60°=1/2
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Express the height of the following rectangular prism in meters. (Note: 1 m = 100 cm)
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Answer:I did this one and its 0.75

Step-by-step explanation:

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3 years ago
Find S5 for a geometric series for which a1=81 and r=1/9.
Minchanka [31]

ANSWER

S_5=91\frac{10}{81}




EXPLANATION


The sum of the first n terms of a geometric sequence is given by;


S_n=\frac{a_1(1-r^n)}{1-r} ,-1


Where n, is the number of terms and a_1 is the first term.


When n=5, we have a_1=81, we get;


S_5=\frac{81(1-(\frac{1}{9})^5)}{1-\frac{1}{9}}


S_5=\frac{81(1-\frac{1}{59049})}{1-\frac{1}{9}}


S_5=\frac{81(\frac{59048}{59049})}{\frac{8}{9}}




S_5=\frac{7381}{81}


S_5=91\frac{10}{81}




6 0
3 years ago
Please help on this one?
rodikova [14]

Answer:

\large\boxed{A.\ \dfrac{4}{x-9}}

Step-by-step explanation:

\dfrac{4(x-2)}{(x-2)(x-9)}\\\\\text{canceled}\ (x-2)\\\\=\dfrac{4}{x-9}

4 0
3 years ago
144x^{2}[/tex]-169<img src="https://tex.z-dn.net/?f=-y%5E%7B2%7D" id="TexFormula1" title="-y^{2}" alt="-y^{2}" align="absmiddle"
Ainat [17]

Answer:

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Step-by-step explanation:

5 0
3 years ago
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The answer is 12/0, which is undefined
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3 years ago
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