Recall the double/half angle formulas:
We're given 
, and since 
is between π/2 and π, we expect 
to be negative. So from the Pythagorean identity, we find
Also, we know 
will fall between π/4 and π/2, so both 
and 
will be positive. Then we find
and it follows that
C the property for this states that the order may change but the the answer will remain the same
In this question, it is given that
The population of a particular village can be modeled by the equation
where x is the number of years since 1990.
And we have to find in what year were there 1706 people living in the village?
So we put 1706 for y and solve for x. That is
Subtracting 56 from both sides.
And 1990 +15=2005
Therefore in 2005, there were 1706 people living in the village
35.5 wouldn’t be enough. She needs 2 1/4 of yards of material, first you would need to convert the fraction into a decimal and 1/4 is .25 which gives you 2.25 now you multiply 16 x 2.25 which gives you 36. That’s why 35.5 wouldn’t be enough.
