Answer:
x ≈ 2879.4 m
Step-by-step explanation:
Measure of ∠DAC = 10°
Measure of ∠DAB = 90°
Measure of ∠BAC = 90° - 10° = 80°
By applying cosine rule in ΔABC,
cos(80°) =
=
0.17365 =
x =
x = 2879.36
x ≈ 2879.4 m
a student claims -4i is the only root of a quadratic polynomial equation that has real coefficients whats the students mistake a
1 answer:
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Answer: 17a) 32°
Step-by-step explanation:
Plot the coordinates and draw a line to connect them.
Then draw a horizontal line from (-4, 1) and a vertical line from (4, 6) until they intersect. This creates a 90° triangle.
Notice the length of the horizontal and vertical lines.
Use trigonometry to calculate the angle. Note that tan = opposite/adjacent
