Two fifth of a number less than 9
2 answers:
Explanation:
This question's it's about the algebraic expression. Algebraic expression is a mathematical expression that consists of variables, numbers, and operations.
Two-fifth: →
Number: → (symbols with letters should be variable)
Less than: → it should be subtract or <.
Answer: →
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Answer:
4.3
Step-by-step explanation:
Apply trigonometric ratios to find the answer.
Firstly, we need to find the measure of angle theta. In order to do this, we will use triangle BAD.
From angle theta, the trigonometric ratio sine can be used:
sinθ =
After we find the value, we take the inverse sine of it and the result is approximately 50.7 degrees.
Now, knowing that angles BAD and CAD are the same, we can solve for CD using trigonometric ratio sine.
sin50.7 = opposite/hypotenuse
sin50.7 = CD/5.5
sin50.7 * 5.5 = CD
4.3 ≈ CD