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2 years ago

15

How do I show the identity of cos(6x) = 2cos^2(3x)-1

1 answer:

notsponge [240]2 years ago

4 0

You are given the function of identity of cos(6x) = 2cos^2(3x)-1. <span>A sine and cosine function is one of the basic functions encountered in Trigonometry. Sine is equal to the opposite side over hypotenuse whereas the cosine function is equal to the adjacent side over the hypotenuse.</span>

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Jerome has 1/4 of thw group's video games at his house. Mario has 2/5 of the group's video games at his house. What fraction of

OLga [1]

Answer:

$\frac{13}{20}$ of the group's video games is either at Jeromes house or Marios house.

Step-by-step explanation:

Given the statement: Jerome has 1/4 of the group's video games at his house.

Also,Mario has 2/5 of the group's video games at his house.

⇒ Jerome has group's video games at his house(J) = $\frac{1}{4}$

and

Mario has group's video games at his house(M) = $\frac{2}{5}$

To find the fraction of the group's video games is either at Jerome house or Mario house.

Between two they have = $J+M$ = $\frac{1}{4} + \frac{2}{5} = \frac{5+8}{20} =\frac{13}{20}$ of the group's video games.

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Liono4ka [1.6K]

20 is the answer 7(3)-5/(5)=20

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