Plug in -2 to x in the formula
So f(-2)= ((-2)+1)^2
Your answer should be: 1
They are exactly the same thing
That would be tan
(1-cos)(1+cos)=1-cos² which equals to sin²
√sin²/cos²= sin/cos which equals to tan
An obtuse angle would be an angle more then 90 degrees.
So if you add two angles together, it could be less then 90 degrees, such as 30 + 50 = 80 degrees.
However, it can also be more then 90 degrees, or an obtuse angle, for example 60 + 50 = 110 degrees.
So it's sometimes.
C because there is 180 degrees in a triangle. 147+17=164 and 180-164 is 16
