Hurry 30 points which triangles area would be calculated using the trigonometric area formula

PQR

Step-by-step explanation:

The trigonometric formula requires the length of two sides of the triangle and the included angle to determine the area

A = 1/2 ab sin C

PQR has 2 sides and the included angle

XYZ has 1 sides and the 2 angles

DEF has only 3 sides

ABC has 2 sides but not the included angle

given that triangle abc is transformed two times to get triangle

a"b"c"

first abc is transformed in to a'b'c' as follows:

the coordinates of a are (1,-1) and transformed into a'(-1,1)

similarly b (4,-2) became b'(-4,2) and

c(7,-2) became c'(-7,2)

i.e. (x,y) becomes (-x,-y)

this is nothing but reflection about a point here origin.

thus first transformation is reflection on the origin.

next is exactly shifting 3 units down

source:

step-by-step explanation: