Answer:
Step-by-step explanation:
Numerator
sin
x
cos
y
+
cos
x
sin
y
−
[
sin
x
cos
y
−
cos
x
sin
y
)
=
sin
x
cos
y
+
cos
x
sin
y
−
sin
x
cos
y
+
cos
x
sin
y
=
2
cos
x
sin
y
Denominator
cos
x
cos
y
−
sin
x
sin
y
+
cos
x
cos
y
+
sin
x
sin
y
=
cos
x
cos
y
−
sin
x
sin
y
+
cos
x
cos
y
+
sin
x
sin
y
=
2
cos
x
cos
y
---------------------------------------------------------------
left side can now be expressed as
2
cos
x
sin
y
2
cos
x
cos
y
=
2
cos
x
sin
y
2
cos
x
cos
y
=
sin
y
cos
y
and
sin
y
cos
y
=
tan
y
=
right side hence proved
Answer:
8- complementary angles
9- supplementary angles
10- supplementary angles
Step-by-step explanation:
first of all you must find out how many vases he makes per day;
24 ÷ 8 = 3 vases per day
So if he makes 3 vases per day now to find how much time he takes per vase you must divide the number of hours he works per day by the number of vases he makes per day;
6 hours ÷ 3 vases =
6 ÷ 3 = 2
so your final answer would be: 2 hours per vase
The correct answer is:
C-old price was $170; new price is $159.12
Answer:
18
Step-by-step explanation:
Negative and negative will always be positive so that you need to add