-1 -11 1 1tan cos4 21 1 | x | x | x | |---|---|---| x x   + − − π = −   + + −  , 1 1 x− ≤ ≤ [Hint: Put x = cos 2θ] Solve the following equations:

Question

-1 -11 1 1tan cos4 21 1
| x | x | x |
|---|---|---|
x x   + − − π = −   + + −  , 1 1 x− ≤ ≤  [Hint: Put x = cos 2θ] Solve the following equations:

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