During a nature walk Jill identified 20 species of animals and plants she said that 1/3 of the species she identified were anima
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Taking the arcsin of both sides of the equation, you get ...
... 90° -x = {-60°, -120°}
So ...
... x = 90° -{-60°, -120°} = {150°, 210°}
The appropriate choice is ...
... 210
