For the right triangle shown in the picture, recall the trigonometric identity of the cosine function:
Isolate <em>a</em> from the equation:
Substitute for <em>c=6.3</em> and <em>B=43.8°</em>:
Use a calculator to evaluate the expression:
Answer:
Total temperatures for 8 days is 15.
The 8-day average (mean) temperature is 15/8 or 1.875 degrees.
Step-by-step explanation:
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Step-by-step explanation:
substitute:
g(2) = (2^2)-(3×2)+4 = 2
b(-3)= 13-(4×-3) = 13-(-12)=13+12 = 25
g(2)×b(-3)=2×25 = 50