jeancarlo1107
20.02.2020 •
Mathematics
Rewrite cot 80° in terms of its cofunction.
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Ответ:
tan 10 degrees.
Step-by-step explanation:
tan x = cot (90 - x) so:
cot 80 = cot (90 - 10)
= tan 10.
Ответ:
x = 10
Step-by-step explanation:
Add like terms:
x + 4x + 30 = 80
5x + 30 = 80
Then, subtract 30 from both sides:
5x + 30 = 80
-30 -30
5x = 50
Finally divide both sides by 5:
5x = 50
x = 10