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Alina [70]
2 years ago
5

Please help me will give brainliest

Mathematics
1 answer:
oksian1 [2.3K]2 years ago
7 0

Answer:

m = \frac{13}{3}

Step-by-step explanation:

Given

\frac{1}{12} = \frac{m-4}{4} ( cross- multiply )

12(m - 4) = 4 ( divide both sides by 12 )

m - 4 = \frac{4}{12} = \frac{1}{3} ( add 4 to both sides )

m = 4 \frac{1}{3} = \frac{13}{3}

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This is very simple.

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3 years ago
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What basic trigonometric identity would you use to verify that sinx cosx tanx=1-cos^2x
andre [41]

Answer:

sin^2x+cos^2x=1 is used to prove the given equation.

Step-by-step explanation:

We have given an equation:

sinx\cdot cosx\cdot tanx=1-cos^2x

We will consider right hand side first

tan x can be written as:

tanx=\frac{sinx}{cosx}

So, on substituting tan x in the left hand side of the given equation we get:

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And we have an identity:

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\Rightarrow sin^2x=1-cos^2x

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2 years ago
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Answer:

-1 < x < 4.

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