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Tpy6a [65]
3 years ago
14

The side lengths of a 30-60-90 triangle are in the ratio 1: V3 : 2. What is sin 30°?

Mathematics
1 answer:
rodikova [14]3 years ago
7 0

Answer:

A

Step-by-step explanation:

side opposite to smallest angle is smallest=1

Hypotenuse=2

sin 30=1/2

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E(X)=\sum_{i=1}^n X_i P(X_i)  

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In statistics and probability analysis, the expected value "is calculated by multiplying each of the possible outcomes by the likelihood each outcome will occur and then summing all of those values".

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In order to calculate the expected value we can use the following formula:  

E(X)=\sum_{i=1}^n X_i P(X_i)  

And if we use the values obtained we got:  

E(X)=(1060*0.5) +(1400*0.1) +(1620*0.4)=1318  

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