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densk [106]
3 years ago
5

Please someone help me...​

Mathematics
2 answers:
kramer3 years ago
4 0

Step-by-step explanation:

x cos θ + y sin θ = x cos β + y sin β

<em>Let's say x = cos A, and y = sin A.</em>

cos A cos θ + sin A sin θ = cos A cos β + sin A sin β

<em>Use angle sum formula.</em>

cos(A − θ) = cos(A − β)

A − θ = ±(A − β)

A − θ = β − A

2A = θ + β

A = (θ + β) / 2

cot A = cot((θ + β) / 2)

x/y = cot((θ + β) / 2)

soldi70 [24.7K]3 years ago
4 0

Take a look at the explanation below. It proves that 'x / y = cot(θ + β / 2)' using a different method.

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The area that the plane can fly and be in the zone known as the Bermuda is; 346952 mile²

<h3>How to use the area rule to find the area of a triangle?</h3>

The area rule states that the area of any triangle is equal to half the product of the lengths of the two sides of the triangle multiplied by the sine of the angle included by the two sides.

Now, from the question, we are give;

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7 0
2 years ago
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3 years ago
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JulijaS [17]

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(7, 63)

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5 0
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