SOLUTION: Find all solutions to each equation a) cotx +1=0 b) 2 cosB+1=0

SOLUTION: Find all solutions to each equation a) cotx +1=0 b) 2 cosB+1=0

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Question 371827: Find all solutions to each equation
a) cotx +1=0
b) 2 cosB+1=0
Answer by robertb(5830) (Show Source): You can put this solution on YOUR website!
a) cotx = -1, same as tanx = -1, from 0 to , the only solutions are and .
b) The equation is the same as cosB = 1/2. From 0 to , the only solutions are and .

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