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teachoo.com
Ex 3.3, 9 - Prove cos (3pi/2+x) cos (2pi + x)[cot (3pi/2 - x)
Ex 3.3, 9Prove cos (3π/2 𝑥) cos (2π 𝑥)[cot (3π/2−𝑥) cot (2π 𝑥)] =1Solving L.H.S. Now,cos (𝟑𝝅/𝟐 " " 𝒙) = sin xcos (2π x) = cos xcot (2π x) = cot xcot (𝟑𝝅/𝟐−𝒙) = tan x Now putting values in equationcos (3π/2 𝑥) cos (2π 𝑥)[cot (3π/2−𝑥) cot (2π 𝑥)] = (sin
Dec 13, 2024
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