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kvasek [131]
3 years ago
13

Simplify: (1-sin^2 x)/(1+tan^2 x)

Mathematics
1 answer:
Sonja [21]3 years ago
4 0

Answer:

cos^{4} x

Step-by-step explanation:

Using the trigonometric identities

1 + tan²x = sec²x and 1 - sin²x = cos²x

secx = \frac{1}{cosx}

Given

\frac{1-sin^2x}{1+tan^2x}

= \frac{cos^2x}{sec^2x}

= \frac{cos^2x}{\frac{1}{cos^2x} }

= cos²x × cos²x

= cos^{4} x

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Answer:

Solve for x+y=10

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Step-by-step explanation:

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7 0
3 years ago
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3 years ago
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TiliK225 [7]
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3 years ago
7. 4 = 8X + 5Y _____________________________
Strike441 [17]

As the equation does not consists like terms we can only get x , y equations.

Step-by-step explanation:

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If the value to be is found is X then,

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8x+5y-5y=4-5y

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Now divide by 8

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If we need y value then,

subtracting both sides by 8x

5y=4-8x

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8 0
3 years ago
What is 2 1/2 + 5 1/2?
ZanzabumX [31]

Answer:

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8

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