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2 years ago

30 POINTS URGENT! When solving the following system of equations, which variable would be the easiest to solve for?

Mathematics

1 answer:

AnnyKZ [126]2 years ago

8 0

Answer:

Step-by-step explanation:

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Simplify the trigonomic expression 1/1+ sin

Softa [21]

Answer:

$\sec^2\theta-\tan\theta\sec\theta$

Step-by-step explanation:

We have to simplify the trigonometric expression $\frac{1}{1+\sin\theta}$

Let us multiply the numerator and denominator by $1-\sin\theta$

$\frac{1}{1+\sin\theta}\times\frac{1-\sin\theta}{1-\sin\theta}$

In the denominator apply the formula for difference of squares

$a^2-b^2=(a+b)(a-b)$

Thus, the denominator will become

$(1+\sin\theta)(1-\sin\theta)=1-\sin^2\theta$

Thus, the expression is

$\frac{1-\sin\theta}{1-\sin^2\theta}$

Using the relation $1-\sin^2\theta=\cos^2\theta$

$\frac{1-\sin\theta}{\cos^2\theta}$

We can rewrite this expression as

$\frac{1}{\cos^2\theta}-\frac{\sin\theta}{\cos^2\theta}$

Finally, the simplified expression is

$\sec^2\theta-\tan\theta\sec\theta$

6 0

3 years ago

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Y=1/2x+2 What is the y intercept

erma4kov [3.2K]

If you set x equal to 0, you will get that the y intercept is 2.

7 0

3 years ago

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(Ill give brainliest :) )

meriva

Answer:

A and C

Step-by-step explanation:

A.¼×6766=1691.5

B.6×6766=40,596

C.½×6766=3383

D.1×6766=6766

4 0

2 years ago

Reflexive property of equality: 3x-1=

kkurt [141]

3x - 1 = 3x -1 because it's reflecting itself

7 0

3 years ago

PLEASE ANSWER

melamori03 [73]

Answer:

A. (2,2), (3,2), (3,3), (3,4), (4,6), (5,4), (5,7), (6,4), (6,6), (7,7)

6 0

3 years ago

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