<h3>
Answer:</h3>
- left picture (bottom expression): -cot(x)
- right picture (top expression): tan(x)
<h3>
Step-by-step explanation:</h3>
A graphing calculator can show you a graph of each expression, which you can compare to the offered choices.
_____
You can make use of the relations ...
... sin(a)+sin(b) = 2sin((a+b)/2)cos((a-b)/2)
... cos(a)+cos(b) = 2cos((a+b)/2)cos((a-b)/2)
... cos(a)-cos(b) = -2sin((a+b)/2)sin((a-b)/2)
Then you have ...

and ...

Answer:
The meeting was 70 minutes long
Step-by-step explanation:
x+5=75
subtract 5 from both sides
x=70
Yes for all integers and no for operations which include
subtraction and division.
It is widely used in many equations, either to group or to
simplify equations. Associative Property of basic operations is a property of
means to cluster or set some numbers into simpler equations. It is only applicable
for operations that include adding and multiplying. Take note of the arrangement
for these set of equations. For example, 1a + 3xy + 4xy = 1a + (3 + 4)xy.
The answer is 14 - 48 i did use foil method btw