Unit l2 trigonometry homework 6 law of cosines
Does anyone know the answer please help!​

Step-by-step explanation:

The law of cosine states that:

, where C is the side opposite of angle theta, and A and B are the adjacent sides of the angle.

In this case, A is equal to 21, and B is equal to 30 (or it could also be the other way around). That means that:

(to nearest 6 digits)

102.61

Step-by-step explanation:

assuming that QS is the hypothesis we us the fromula like this:

which gives us 8.7711511417 or we can round to 8.77

assuming that QS is the adjacent  we use:

which gives us 102.609108595 or rounded to 102.61

looking at both answers we can see that 102.61 would be the correct answer.

for finding the midpoint of any given 2 pair of points simply add the respective x coordinates with other x coordinate and the y coordinate with other y coordinate and divide them by 2

in your question it will be :

(3+1)/2 for the x coordinate of mid point i.e 2

[8+(-4)]/2 for the y coordinate of midpoint i.e 2

so coordinates of mid point of points (3,8) and (1,-4) will be (2,2)

45

step-by-step explanation:

to find a percentage, add a decimal in front and multiply it by the other number.

.25 times 180= 45