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Having trouble with trigonometry , please help.

CSCx (1 + SINx) = 1 + CSCx

prove the identity

Sagot :

AL2006
Remember that the cosecant is the reciprocal of the sine.  CSC(x) = 1/SIN(x).

Now operate on the left side, and see if you can make it look like the right side:

CSCx (1 + SINx)

Substitute for CSCx :

(1/SINx) (1 + SINx)

Multiply them:

1/SINx + SINx/SINx 
which is the same as  1/SINx + 1
which is the same as CSCx + 1,
and that's the right side of the identity, so you proved it.
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