Math miscellaneousHard
Question
Number of solution(s) of the equation 
= 8 in θ ∈[0, π] is
= 8 in θ ∈[0, π] is Options
A.4
B.6
C.8
D.10
Solution
= 8⇒
= 8⇒
= 1⇒
= 1⇒
= 1⇒ tan 8θ = tanθ
8θ = nπ + θ
⇒ 6 solutions in [0, π] for n = 1,2,3,4,5 & 6
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