Answer:
x = y = 15
Step-by-step explanation:
Using the sine ratio and the exact value
sin45° = , then
sin45° = = = ( cross- multiply )
2x = 30 ( divide both sides by 2 )
x = 15
The triangle is isosceles (45- 45- 90) , then 2 legs are congruent, so
y = x = 15
b
f(x) = x² – 8 and g(x) = 4-x
y=f(x) - g(x)
y=(x² – 8) - (4-x)