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10.12.2020 •
Mathematics
Use the cosine double-angle identity cos(2θ) = 2cos^2θ-1 to derive an identity for cos^2θ SHOW YOUR WORK IN STEPS PLEASE. ANSWER ASAP IF U CAN.
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Ответ:
Step-by-step explanation:
The cosine double angle formula tells us that cos(²θ) is always equal to cos²θ- sin²θ. For example cos(60) = cos²(30) - sin² (30). We can use this identity to rewrite expressions or solve problems
Ответ: