1.

State which of the following is true?

Answer»

`tanx + COTX = secx " cosec "x` is solvable.
`x=pi/4` is a root of the equation `3X +4=6-5tan2x`.
The equation `tan^(2)THETA - tantheta +1=0` is not solvable
The equation `a COSTHETA + cos theta =2` is solvable.

Answer :C


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