(sec²0 - 4/3) (2sin0 + 1)=0 csc³0 + 2csc²0 - 4/3csc²0 - 8/3=0 2sin²0 + 2sin0 + 1/2 =0

asked Sep 22, 2023 190k views

4 votes

(sec²0 - 4/3) (2sin0 + 1)=0

csc³0 + 2csc²0 - 4/3csc²0 - 8/3=0

2sin²0 + 2sin0 + 1/2 =0

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6 votes

Answer:

2sin²0 + 2sin0 - 1/2 = 0

(2sin0 + 1)(sin²0 - 1/2)= 0

2sin0 + 1 = 0 or sin²0 - 1/2 = 0

2sin0 = -1 or sin0 = ±1/√2

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