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3 years ago

Find the missing measure ; Help me understand how to solve this.

Mathematics

1 answer:

blsea [12.9K]3 years ago

8 0

Use Soh Cah Toa. Soh(sin) is the Opposite side divided by the Hypotenuse side so in this case 21/20. Since we need the angle here we would use the inverse of sin. Your equation is Sin(x)=Opposite/Hypotenuse=21/20=1.05
Now solve sin(x)=1.05
Re-arange into
X=sin^-1 (1.05) but since you can’t have a inverse sin of a number more than one it is inconclusive or no answer

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This is one of those questions that can throw you. The problem is that do you include the original rectangle or not. The way it is written it sounds like you shouldn't

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Solution

Let the width = x

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Area of the rectangle: L * w = x * (x + 5)

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