Answer:
F = 53.1°
Step-by-step explanation:
When you consider F as your angle
cos F = adjacent / hypotaneous
or, cos F = EF/DF
We do not have DF right now,
so DF² = DE² + EF²
DF = √ (12² + 9²)
DF = 15
cos F = adjacent / hypotaneous
or, cos F = EF/DF
cos F = 9 / 15
F = cos ⁻¹ (9/15)
F = 53.1°
Answer:
Ratio: 3/2
First Term: 3
Step-by-step explanation:
I think triangle ZYX by asa
Y-10y+18=-3 (5y-7) +5y
y-10y+18= -15y+21 +5y
-9y+18=-10y+21
-9y+10y= 21-18
y=3
Instructions:
1. Solve the ones in the bracket.
2. Then add/subtract the one with the say value (the ones with y).
3. Put the ones with y on one side and the numbers on the different side.
Note: the positive value/ negative value will always change when u move it to another side.
