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2 years ago

If sin (90° - α) = BC /CA,write down the ratio of sina.

Mathematics

1 answer:

Papessa [141]2 years ago

7 0

Answer:

Step-by-step explanation:

sin(90-a)=cos

cos = angle adjacent

theta=BC/CA

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What is this I have been on it fourever

Yuki888 [10]

Answer:

$\frac{3}{4}$ = $\frac{9}{12}$

Step-by-step explanation:

The values are in proportion if the right side is a multiple of the left side

Consider

$\frac{3}{4}$ × $\frac{3}{3}$

= $\frac{3(3)}{4(3)}$

= $\frac{9}{12}$

Thus $\frac{3}{4}$ and $\frac{9}{12}$ are in proportion

This does not happen for any of the other three.

3 0

3 years ago

Select all the expressions that are equivalent to -2(4-3x)+(5x-2)

Anestetic [448]

Answer:

2. 11x - 10

3. -8 + 11x - 2

5. -8 + 6x + 5x -2

Step-by-step explanation:

To find the equivalent expressions, find the solution to the expression -2(4 - 3x) + (5x - 2). All expressions that are within the solving process <u>or</u> have the same solution are equal to the given expression.

-2(4 - 3x) + (5x - 2)

-2(4 - 3x) + 5x - 2

-8 + 6x + 5x - 2

-8 + 11x - 2

11x - 10

In this case, the equivalent expressions were within the solving process. From this, we can see that the equivalent expressions are 11x - 10, -8 + 11x - 2, and -8 + 6x + 5x - 2. Aka choices 2, 3, and 5.

hope this helps!

8 0

2 years ago

Help it is due tomorrow morning

Xelga [282]

Answer:

1. rhombus

2. trapezoid

3. rectangle

Step-by-step explanation:

8 0

3 years ago