Give that cos 42* = 0.743, what is the sine of the complementary angle?

Mathematics

1 answer:

grin007 [14]3 years ago

5 0

The complement of 42 is 90-42 or 48. sin of 48 is 0.743144

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3 years ago

Which system of equations has the same solution as the system below

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Answer:

None of the above.

Step-by-step explanation:

The system of equations which should have the same solution as the system below;

x + 4y = 11

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A rectangle has an area of 256 cm 2 . it has a width that is 48 cm shorter than 4 times its length. what is the rectangle's leng

AveGali [126]

Let
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y-------> the rectangle's width

we now that
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256=x*y-------> equation 1

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substitute equation 2 in equation 1

256=x*[4x-48]-----> 256=4x²-48x
4x²-48x-256=0

using a graph tool----> to resolve the second order equation
see the attached figure
the solution is
x=16 cm
y=4x-48----> y=4*16-48-----> y=16 cm

is a square

the answer is
the rectangle's length is 16 cm