Answer:
Step-by-step explanation:
............................................ (1)
............................................ (2)
now equate both (1) and (2)



now substitute the values of x ,
when
, y becomes 0
when
, y becomes 8
so, solution set:
and 
Answer:
sin A= 3/5
sin C= 4/5
cos A= 4/5
cos C= 3/5
Step-by-step explanation:
Please see the attached picture for the full solution.
Answer:
1
Step-by-step explanation:
cuz
Two fractions where the LCD between them is 20 can be 7/20 and 20/40.
I chose these 2 fractions because 7/20 cannot be reduced anymore, but 15/40 can be reduced into 10/20.