Ask question

Ask question

All categories

3 years ago

9

I need help figuring out when to use law of sine or law of cosine?

1 answer:

irina [24]3 years ago

4 0

When you have angle and its corresponding (opposite) side then you need to use law of sin. Problems 3,4,5(in 5 you need at first find angle X=180-92-62)

when you have two sides and angle between them, this is law of cos, problem 6,8

problem 7 you can use both, but if you can use both better to use law of sin, it is just easier

You might be interested in

What are the focus and directrix of the parabola with the equation y=1/12 x^2

Nataly [62]

<h2>Answer:</h2>

$\boxed{y=-3}$

<h2>Step-by-step explanation:</h2>

The graph of this parabola is shown below. From this graph we know that:

VERTEX:

$(h,k)=(0,0)$

DIRECTIX:

Since the vertex lies on the origin and the parabola opens upward, then the standard form of this parabola is:

$x^2=4py$

So:

$y=\frac{1}{12}x^2 \\ \\ \therefore 12y=x^2 \ or \ x^2=12y \\ \\ \\ Then: \\ \\ 4p=12 \therefore p=3$

Then the directrix is:

$y=k-p \\ \\ \therefore y=0-3 \therefore \boxed{y=-3}$

4 0

3 years ago

A six-sided number cube is weighted so that the number do not all have the same probability of landing up

Jobisdone [24]

Answer:

Ok so if this is a question then the probalility will probably be 1/3 for three of the 6 sides.

Step-by-step explanation:

3 0

3 years ago

Please help me ASAP will mark best answer brainliest

IrinaK [193]

Answer:

4.) Silvia had the greater variation in her race results for the season because she has a higher standard deviation.

Step-by-step explanation:

hope this helps!!! :)

4 0

3 years ago

PLEASE HELP WILL MARK BRAINLEIST!!!!! 25 POINTS

Veseljchak [2.6K]

The answer is C 7
Hope this helps

8 0

3 years ago

A study conducted an experiment with 22,000 women over 10 years to investigate whether a high-stress job leads to heart problems

solniwko [45]

The sample of the group would be the 22,000 participants.

3 0

3 years ago