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Temka [501]
3 years ago
11

Simplify (1+tan^2y)(cos2y-1)

Mathematics
1 answer:
Reil [10]3 years ago
8 0
1+tan^2(y)=1/cos^2(y)
cos 2y -1=cos^2(y) -sin^2(y)-cos^2(y) -sin^2(y)


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I need to find the angles of A and B. From what I know, they should be congruent, but I've been stuck for wayyyy to long.​
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8 0
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If it takes eight men ten hours to build a wall, how long would it take four men?
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3 years ago
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Likurg_2 [28]

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Image attached

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4 0
3 years ago
The floor of a gazebo is in the shape of a regular octagon. The perimeter of the floor is 72 feet. The distance from the center
Katyanochek1 [597]
The length of one side of the octagon is given by:
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L = 9
 Then, the apothem can be determined using the Pythagorean theorem in the following way:
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 a = \sqrt{11.8 ^ 2 - (9/2) ^ 2}
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 Then, the area is given by:
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 Where,
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 A = (8) * (1/2) * (9) * (10.91)

A = 392.76 feet ^ 2
 Answer:
 
the approximate length of the apothem is:
 
a = 10.91 feet
 
The approximate area of the floor of the gazebo is:
 
A = 392.76 feet ^ 2
8 0
3 years ago
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