katykatmeelee
11.01.2020 •
Mathematics
If cos theta = -3/5 in quadrant 2, what is sin theta?
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Ответ:
Step-by-step explanation:
if cos theta = -3/5 in quadrant 2, find out sin(theta)
cos is negative in second and third quadrant
Here cos is in second quadrant.
Sin is positive in second quadrant .
adjacent side= 3 , hypotenuse = 5
Lets use Pythagorean theorem
Subtract 9 from both sides
b=4
opposite side = 4
Ответ:
hello : sin(θ) = 4/25
Step-by-step explanation:
you know : cos²(θ) + sin²(θ) =1 and : cos(θ) = - 3/5
(-3/5)² + sin²(θ) =1
9/25 + sin²(θ) =1
sin²(θ) =1 -9/25
sin²(θ) = 16/25
sin(θ) = 4/25 or sin(θ) = - 4/25
in quadrant 2 : sin(θ) > 0
so : sin(θ) = 4/25
Ответ:
Just draw 3 non parallel lines. These paths will form a triangle with vertices A, B, C. So you know that the angles have to add up to 180.
Step-by-step explanation: I HAD A DIFFICULT TIME DOING THIS ON PLATO I'LL COME BACK WITH AN UPDATE TO SEE IF ITS CORRECT. ( I HOPE I HELP FOR NOW)