1.

(sin A -1) (2 cos A-1)=0​

Answer»

Answer:

2[SIN(A-1)][COS(A-1)]

Step-by-step explanation:

=>It is in form 2sinxcosx=sin2x

=>sin2(A-1)=0

=>sin2(A-1)=sin0°

=>2(A-1)=0 =>A=1



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