2 years ago

Which expression is equivalent to

1 answer:

LiRa [457]2 years ago

7 0

Answer: B 1/m

Step-by-step explanation:

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Svetach [21]

Answer:

BC=sin(62∘)⋅22≈19.42

8 0

2 years ago

Lynna [10]

Answer:

1/4

Step-by-step explanation:

The ratio of the areas is the square of the ratio of the lengths of sides.

(1/2)² = 1/4

Answer: 1/4

7 0

2 years ago

wlad13 [49]

7y=-9x-18

that is all I can do

4 0

3 years ago

Gennadij [26K]

(7+5) x 6 +3

or 3+ (7+5) x 6

8 0

3 years ago

Agata [3.3K]

Start by combining the fractions:

$\dfrac{\cos\alpha}{1+\sin\alpha}\cdot\dfrac{1-\sin\alpha}{1-\sin\alpha}+\dfrac{\cos\alpha}{1-\sin\alpha}\cdot\dfrac{1+\sin\alpha}{1+\sin\alpha}$

$\dfrac{\cos\alpha(1-\sin\alpha)+\cos\alpha(1+\sin\alpha)}{(1+\sin\alpha)(1-\sin\alpha)}$

$\dfrac{2\cos\alpha}{1-\sin^2\alpha}$

Recall the Pythagorean identity:

$\dfrac{2\cos\alpha}{\cos^2\alpha}$

Then cancel a factor of $\cos\alpha$ and use the definition of secant:

$\dfrac2{\cos\alpha}=\boxed{2\sec\alpha}$

4 0

3 years ago