1.

(Sin45)^2 - (cos45)^2

Answer»

Answer:

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Step-by-step EXPLANATION:

(1/√2)∧2 - (1/√2)∧2

1/2 -1/2

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ALTERNATIVE ---

(SIN45)∧2-(COS45)∧2

(COS90-45)∧2 - (COS45)∧2

(COS45)∧2 - (COS45)∧2

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