If 0<theta, phi < pi/2, x = cos^(2n)theta

JEE MAIN 2021 Feb 25 Shift 1 Solution 5

a. xyz = 4

b. xy – z = (x + y)z

c. xy + yz + zx = z

d. xy + z = (x+y)z

Answer: (d)

JEE MAIN 2021 Feb 25 Shift 1 Solved Question 5

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If 0<θ, ϕ < π/2, x = cos²ⁿθ