Tyleris making invitations to the fair. He has already made some of the invitations, and he wants to finish the rest of them wit
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Answer:
Explanation:
In a right triangle the angle between the hypotenuse and the adjacent leg to the angle are related by the trigonometric ratio cosine.
Cosine is the ratio of the adjacent leg to the hypotenuse:
In the right triangle ART, AT is the hypotenuse, AR is the ajacent leg to the angle 66º, and RT is the opposite leg to the angle 66º.
Then, the length of AT and 12.5 is related by the cosine ratio:
Multiplying both sides of the equation by 12.5in:
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<h2>Check the explanation.</h2>Step-by-step explanation:
The standard form of an ellipse is .
The span of the river is 20 meters. As per the given condition, y-axis will pass through the middle point of the river. That is why, the value of a will be .
Since the height of the arc is 6, the value of b is 6.
The equation of the arc will become .