I use it all the time, but as my profession is engineering, mathematics is integral in my everyday life. I usually do it when evaluating for the magnitude of vector force components. Usually in 2D space, so Pythagorean theorem is quite useful.
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The answer is c.. Just use the distributive property on c and it will equal what you have to factor
Answer:
D r = 4 − 4 cos(θ)
Step-by-step explanation:
Right on edge
