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erica [24]
3 years ago
6

Without using calculator or table find the value of sin 15°​

Mathematics
1 answer:
lubasha [3.4K]3 years ago
6 0

Answer:

.25881

Step-by-step explanation:

sin15

=sin(45-30)

=sin45.cos30-cos45.sin30

=(0.707×0.86)-(0.707×0.5)

=(0.6082)-(0.3535)

=0.25

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3 years ago
Which is f(5) for the function -2x2 + 2x - 3?
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The value of f(5) is -37

<em><u>Solution:</u></em>

<em><u>Given function is:</u></em>

f(x) = -2x^2+2x+3

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To find the value of f(5), we have to substitute x is equal to 5 in given function

Plug in x = 5 in f(x)

f(x) = -2x^2+2x+3\\\\f(5) = -2(5)^2+2(5) + 3\\\\\text{Simplify the above expression }\\\\f(5) = -2(25) + 10 + 3\\\\\text{Solve the above expression }\\\\f(5) = -50 + 10 + 3\\\\f(5) = -40 + 3 = -37

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6 0
3 years ago
2log(base 5)^(x-3)-log(base 5)^8= log(base 5)^2
Alja [10]

Answer:

x = 7

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7 0
3 years ago
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