Check the picture below.
make sure your calculator is in Degree mode.
You can write it as:
-4≥x≤6
*The '≥' and '≤' just means that it is greater than or less than but it can still be equal to the number you are comparing it to.
Hope this helps! :)
Step-by-step explanation:
tan(Θ + 30°)
Use angle sum formula:
tan(A + B) = (tan A + tan B) / (1 − tan A tan B)
So we can write this as:
(tan Θ + tan 30°) / (1 − tan Θ tan 30°)
tan 30° = 1/√3, so:
(tan Θ + 1/√3) / (1 − 1/√3 tan Θ)
Multiply top and bottom by √3:
(√3 tan Θ + 1) / (√3 − tan Θ)
We need to divide the number of inches by the number of hours.
Let's first convert the two numbers into fractions.
12 1/2 = 25/2
25 1/2 = 51/2
(25/2) / (51/2) = 25/2 * 2/51 = 50/102 = 25/51 = 0.49
The average rainfall was approximately 0.5 inches per hour.
