You have to use the fact that 
for any value of 
. So
where 
is the positive acute angle you're looking for.
I like to use Math way it does a lot of math and calculator soup
Answer: -103
Step-by-step explanation:
4(2³)(2-5)-7
=(4)(8)(2-5)-7
=32(2-5)-7
=(32)(-3)-7
=-96-7
=-103
To find this, you'd just add 13 to -2. So -2 + 13 = 11. So the starting temperature was 11 degrees.
