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Prove that (cos^4 θ - sin^4 θ)/(1 - tan θ) = (cot θ + 1)/(sec θ * csc θ)
Prove that (cos^4 θ - sin^4 θ)/(1 - tan θ) = (cot θ + 1)/(sec θ * csc θ)
แสดงข้อมูลเพิ่มเติม 1
Prove that (cos^4 θ - sin^4 θ)/(1 - tan θ) = (cot θ + 1)/(sec θ * csc θ)
