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murzikaleks [220]
3 years ago
7

If the sin 90 degrees is 1, then the cos___degrees=___

Mathematics
2 answers:
Leona [35]3 years ago
8 0
If sin(90°) = 1, then cos(90°-90°) = cos(0°) = 1
Solnce55 [7]3 years ago
8 0
We'll use this identity: 
cos(90 - x) = sin(x)
where x is any real number

If x = 90, then sin(x) = sin(90) = 1 which is given to us. 

So this means

cos(90 - x) = sin(x)
cos(90 - 90) = sin(90)
cos(0) = 1

So it's likely your teacher is looking for you to write cos(0) = 1

However, the prompt and instructions are a bit vague. There are other possibilities that I may not be thinking of. 
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3 years ago
Kim creates a model of a building. The scale of her model building is 1 foot to 8 inch. Some of the measurements are shown in th
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Answer:

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Here, we want to make a conversion and fill in the empty spaces

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3 years ago
a rectangular prism with a volume of 10 cubic units is filled with cubes with side lenghts of 1/2 unit how many 1/2 unit cubes d
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Step-by-step explanation:

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a fisherman travels 9mi downstream with the current in the same time he travels 3 mi upstream against the current. if the speed
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Math question down below
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