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Marizza181 [45]
3 years ago
6

Please help me do 9c fast please ​

Mathematics
1 answer:
Assoli18 [71]3 years ago
6 0

Answer:

see explanation

Step-by-step explanation:

Using double angle formulae for cosine and sine

Consider left side

cos4θ

= cos2(2θ)

= cos²(2θ) - sin²(2θ)

= [ cos²θ - sin²θ ]² - (2sinθcosθ)²

= [ (1 - sin²θ - sin²θ ]² - (2sinθcosθ)²

= (1 - 2sin²θ )² - (2sinθcosθ)²

= 1 + 4sin^{4}θ - 4sin²θ - 4sin²θcos²θ

= 1 + 4sin^{4}θ - 4sin²θ - 4(1 - sin²θ)sin²θ

= 1 + 4sin^{4}θ - 4sin²θ - 4sin²θ + 4sin^{4}θ

= 1 - 8sin²θ + 8sin^{4}θ

= right side , thus proven

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Someone help me please.
Maru [420]

Answer:

3

Step-by-step explan

1 x 4/2 + 1

4/2 + 1

4 divide by 2 is = 2

2+1 = 3

so the value of 1 x b/2 + 1 is = to 3

4 0
3 years ago
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NeTakaya

A statement which best defines an output is: B. an output is the result of a relation or the function rule, usually the y-values in a set of ordered pairs or on a table or graph.

<h3>What is a function?</h3>

A function can be defined as a mathematical expression that defines and represents the relationship between two or more variable, which is typically modelled as input (x-values) and output (y-values).

<h3>The types of function.</h3>

In Mathematics, there are different types of functions and these include the following;

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In this context, we can infer and logically deduce that a statement which best defines an output is that it's the result of a relation or the function rule, which usually are the y-values in a set of ordered pairs, on a table or a graph.

Read more on function here: brainly.com/question/9315909

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Complete Question:

Which of the following best defines an output?

A. An output is the value that determines another based on the relation or the function rule, usually the x-values in a set of ordered pairs or on a table or graph.

B. An output is the result of a relation or the function rule, usually the y-values in a set of ordered pairs or on a table or graph.

C. An output is a special type of relation for which there is a rule that pairs each input with exactly one output.

D. An output is a set of ordered pairs in which no y-value repeats.

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1046₈ = 550₁₀

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