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AleksandrR [38]
1 year ago
8

Which equation can be solved to find one of the missing side lengths in the triangle?aB60512 unitsАCOS(60°) =22 믕cos(60°) = 12Su

bmitNex응Save and Exitcos(609) =0=1or this and return
Mathematics
1 answer:
Mekhanik [1.2K]1 year ago
3 0

In a right rectangle, we have:

\sin \alpha=\frac{opposite}{hypotenuse}\cos \alpha=\frac{\text{adjacent}}{hypotenuse}

For your exercice, hypotenuse=12

The exercise also inform the angle 60°, then:

\sin \text{ 60}=\frac{\text{opposite}}{\text{hypotenuse}}=\frac{b}{12}\cos 60=\frac{adjacent}{\text{hypotenuse}}=\frac{a}{12}

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A student concludes that for all values of x,x^2+x+1 produces a prime number. Which value of x serves as counterexample to prove
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- x =  - 1

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Divide the first equation by (-1)    

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