the answer is 12. owowowowow
Answer:r
Step-by-step explanation:
let x and y this numbers : x +y = -103 and x = y +59
so : y+59 +y = -103
2y +59 = -103
2y +59-59 = -103-59
2y = -162
y = -162/2
y = -81 but x = y +59
so : x = -81+59
x = -22
This is the concept of geometry, given that AB=AC, it means that the tirangle is isosceles, thus to get the value of AB and AC we proceed as follows;
thus using the cosine rule:
c^2=a^2+b^2-2abcosC
suppose\AB=AC=x
thus;
8^2=x^2+x^2-2*x*xcos15
64=2x^2-2x^2cos15
64=2x^2-1.9x^2
64=0.1x^2
x^2=640
x=sqrt640
x=25.3
hence;
AC=AB=25.3
Answer:
BAD=100° (given)
ADC=105° (180-75)
DCB=50° (vertical angles)
CBA=105° (same as ADC)