3 years ago

The sides of the cubes are numbered 1 through 6. If they are both tossed, what is the probability that they will both be a 2?

1 answer:

5 0

1/36;
There is a 1/6 of getting a 2 on both tosses and the events are independant so you do:
1/6 * 1/6 which equals 1/36

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3 years ago

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If cos(-ϴ)=0.95, find sin(π/2-ϴ)

Furkat [3]

$\bf \textit{Cofunction Identities}
\\\\
sin\left(\frac{\pi}{2}-\theta\right)=cos(\theta)
\qquad 
cos\left(\frac{\pi}{2}-\theta\right)=sin(\theta)
\\\\\\
\stackrel{\textit{symmetry identities}}{cos(-\theta )=cos(\theta )}\\\\
-------------------------------\\\\
sin\left(\frac{\pi}{2}-\theta\right)=cos(\theta)=cos(-\theta )=0.95$