I need help getting the solution to 2cos^2 112.5°-1
1 answer:
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Answer:
Step-by-step explanation:
1. Rewrite the quadratic function:
2. By the perfect trinomial square:
3. You have that
4. Therefore, you can write the function in the following intercept form:
Given Information:
Point 1 = (8, −3)
Point 2 = (4, −7)
Required Information:
Distance between points = d = ?
Answer:
Distance between points = d = √32 = 5.657
Step-by-step explanation:
We are given two points,
(x₁, y₁) = (8, −3)
(x₂, y₂) = (4, −7)
We are asked to find the distance between these two points.
The distance is given by
Substitute the given coordinates into above equation
Therefore, the distance between (8, −3) and (4, −7) is 5.657 units.