3 years ago

22 .Siswa dapat menganalisis persamaan menggunakan identitas trigonometri

1 answer:

8 0

It best you ask your teacher

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nasty-shy [4]

Answer:

$C=69.1^{\circ}$

Step-by-step explanation:

The Law of Cosines is given as:

$c^2=a^2+b^2-2ab\cos C$ .

Plugging in given values, we get:

$16^2=8^2+17^2-2\cdot 8\cdot 17\cdot \cos C,\\\cos C=\frac{-97}{-272},\\C=\arccos(\frac{97}{272}),\\C=\fbox{$69.1^{\circ}$}$ .

3 0

3 years ago

serg [7]

I know B is true, but i’m unsure for the other choices.

7 0

3 years ago

alisha [4.7K]

M = (y2 - y1) / (x2 - x1)
Call (3,-4) one point
Call (-2,5) the second point.

m = (5- -4) / (-2 - 3)
m = 9/-5 = - 9 / 5

B<<<< answer

7 0

3 years ago

lina2011 [118]

The answer is infinitely many solutions.
If you graph them both are a straight line which means they are infinite

8 0

3 years ago

ivann1987 [24]

Answer:

Period=2pi/3

Step-by-step explanation:

8 0

3 years ago