If δabc is reflected across the y axis what are the coordinates of c?

a. (3, -5)
b. (5, -3)
c. (-3, -5)
d. (-5, 3)

D

Step-by-step explanation:

The reflection across the y-axis has the rule:

(x,y)→(-x,y).

So, the vertices of the triangle ABC after reflection across the y-axis will have coordinates:

Hence, correct option is D

(sin 42)/31. = sinx)/37

sinx = 37 (sin42)/31

= 37× 0.66/31 = 0.787

x= 51.9

other angle opposite to y = 180-51.9-42

= 180- 93.9 =86.1

so

sin42)/31 = sin 86.1)/y

0.021 = 0.997 /y

y= 0.997/0.021 =47.47

6 meters

step-by-step explanation: