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stiv31 [10]
3 years ago
13

Find the exact values of sin A and cos A. Write fractions in lowest terms. A right triangle ABC is shown. Leg AC has length 21,

leg BC has length 28, and hypotenuse AB has length 35.
Mathematics
2 answers:
vampirchik [111]3 years ago
7 0
Sin A = opposite / hypotenuse = BC / AB = 28/35  = 4/5

cos A = adjacent /hypotenuse = AC/AB =  21 / 35  = 3/5
andrey2020 [161]3 years ago
3 0
SinA=BC/AB=28/35=4/5; cosA=AC/AB=21/35=3/5.
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Answer:

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8 0
1 year ago
Three stamps can be attached to each other in various ways.how many ways might three stamps be attached?
ivanzaharov [21]
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In this case there are 3 stamps, so y=3, and the formula looks like this: 3×(3-1)×(3-2).
Confused? Let me explain why it works.
There are 3 possibilities for the first stamp: A, B, or C. 
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There is 1 possibility for the third space: the stamp not used in the first or second space. 
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We can see that the number of ways that 3 stamps can be attached is the same regardless of method used.


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-

hope this helps! :))))
7 0
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