This would be cos^2x, because when you foil out the equation you get 1-sin^2(x).
1-sin^2(x)=cos^2(x)
Step-by-step explanation:
Z - 0.72 = - 2.5
Z = - 2.5 + 0.72 = - 1.78
Z = - 1.78
Answer:
Step-by-step explanation:


Apply distributive property


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