Answer:
it's 60 mm
Step-by-step explanation:
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Sum and Difference Formula for Cosine: cos(α±β)= cosαcosβ <span>∓ sin</span>αsinβ
cos(8x+2x)=cosαcosβ-sinαsinβ
cos(10x)=cosαcosβ-sinαsinβ
Answer:
dfadfadsadas
Step-by-step explanation: