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Vladimir [108]
3 years ago
13

Please help me on this

Mathematics
2 answers:
antoniya [11.8K]3 years ago
8 0

For this case, we have that by definition, the HF segment is given by:

Sin (45) = \frac {\sqrt {8}} {HF}\\HF = \frac {\sqrt {8}} {sin (45)}\\HF = \frac {\sqrt {8}} {0.7071}\\HF = 4

Now we find the angle FHE, which by definition will be given:

tg (FHE) = \frac {3} {HF}\\tg (FHE) = \frac {3} {4}\\tg (FHE) = 0.75\\FHE = tg ^ {- 1} (0.75) = 36.86989765

Incidentally, the cosine of the FHE angle will be:

cos (36.86989765) = 0.6755

Answer:

0.6755

timurjin [86]3 years ago
7 0

download the app Aleks & you’ll get your answer

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