Ex 3.3, 9 - Prove cos (3pi/2+x) cos (2pi + x)[cot (3pi/2 - x) - Teachoo

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'cos(3pi2 + x) cos(2pi + x )[ cot(3pi2- x) + cot(2pi + x)] = 1'||

9. Prove that cos (3pi/2 + x) cos (2pi + x) { cot (3pi/2 - x) + cot (2 pi +x)} =1

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9. cos(3π/2+x) cos⁡(2π+x) [cot⁡(3π/2-x)+cot⁡(2π+x) ]=1

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