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3 years ago

Help me on number two plz

Mathematics

1 answer:

s2008m [1.1K]3 years ago

7 0

Okay so Sam has completed 5/13 of the crossword puzzle and wants to do 8/13.

So we need to find out how many more she wants to do.

8/13-5/13=3/13

She has 3/13 has to complete.

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Which of the following functions is graphed below

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D is the answer that is graphed.

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Use the graph to the right to write an equation of the line.

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Answer:

Using the point (-2,-4) it would be:

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Step-by-step explanation:

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2 years ago

So i dont know what 9+4+x is can you help?

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3 years ago

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Answer:

Step-by-step explanation:

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3 years ago

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Verify that (cos²a) (2 + tan² a) = 2 - sin² a....<br>

Sveta_85 [38]

Trigonometric Formula's:

$\boxed{\sf \ \sf \sin^2 \theta + \cos^2 \theta = 1}$

$\boxed{ \sf tan\theta = \frac{sin\theta}{cos\theta} }$

Given to verify the following:

$\bf (cos^2a) (2 + tan^2 a) = 2 - sin^2 a$

$\texttt{\underline{rewrite the equation}:}$

$\rightarrow \sf (cos^2a) (2 + \dfrac{sin^2 a}{cos^2 a} )$

$\texttt{\underline{apply distributive method}:}$

$\rightarrow \sf 2 (cos^2a) + (\dfrac{sin^2 a}{cos^2 a} ) (cos^2a)$

$\texttt{\underline{simplify the following}:}$

$\rightarrow \sf 2cos^2 a + sin^2 a$

$\texttt{\underline{rewrite the equation}:}$

$\rightarrow \sf 2(1 - sin^2a ) + sin^2 a$

$\texttt{\underline{distribute inside the parenthesis}:}$

$\rightarrow \sf 2 - 2sin^2a + sin^2 a$

$\texttt{\underline{simplify the following}} :$

$\rightarrow \sf 2 - sin^2a$

Hence, verified the trigonometric identity.

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2 years ago

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