Cramer’s ruleGiven a system described by linear equations, (1) and represented in matrix form as (2) then, by Cramer’s rule, the values of , and are given by (3) 
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Trigonometric Identities

Cramer’s ruleGiven a system described by linear equations, (1) and represented in matrix form as (2) then, by Cramer’s rule, the values of , and are given by (3) 
____ 
Trigonometric Identities
