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saigeshort
19.01.2020 •
Mathematics
Find csc θ if cot θ = −21/20 and sin θ > 0.
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Ответ:
There are two ways to do this problem.
1) Use a trig identity:
Sub in value for cot
2) Use a right triangle and SOH CAH TOA
cot = 1/tan = adjacent/opposite = -21/20
Therefore adjacent side = 21, opposite side = 20
Use pythagorean thm to find hypotenuse:
csc = 1/sin = hypotenuse/opposite = 29/20
Hope this helps.
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