What is the general solution for cos(15θ)=0 ?

The general solution for cos(15θ)=0 is θ= pi/(30)+(2pin)/(15),θ= pi/(10)+(2pin)/(15)

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cos(15θ)=0

cos (15 θ) = 0

θ = \frac{π}{30} + \frac{2 πn}{15}, θ = \frac{π}{10} + \frac{2 πn}{15}

Solution steps

cos (15 θ) = 0

General solutions for

cos (15 θ) = 0

15 θ = \frac{π}{2} + 2 πn, 15 θ = \frac{3 π}{2} + 2 πn

Solve

15 θ = \frac{π}{2} + 2 πn : θ = \frac{π}{30} + \frac{2 πn}{15}

Solve

15 θ = \frac{3 π}{2} + 2 πn : θ = \frac{π}{10} + \frac{2 πn}{15}

θ = \frac{π}{30} + \frac{2 πn}{15}, θ = \frac{π}{10} + \frac{2 πn}{15}

sin (t) cos (t) = 0

6 sin (θ) = 0

sin (\frac{θ}{2}) = - 1

cos (x) = \frac{1.5}{9}

sin (3 x) = \frac{2}{2}, 0 \leq x < 2 π

What is the general solution for cos(15θ)=0 ?
The general solution for cos(15θ)=0 is θ= pi/(30)+(2pin)/(15),θ= pi/(10)+(2pin)/(15)