What is the general solution for solvefor x,cos(x)*cos(y)=0 ?

The general solution for solvefor x,cos(x)*cos(y)=0 is x= pi/2+2pin,x=(3pi)/2+2pin

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solvefor x,cos(x)*cos(y)=0

solve for

x, cos (x) \cdot cos (y) = 0

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

Degrees

x = 9 0^{\circ} + 36 0^{\circ} n, x = 27 0^{\circ} + 36 0^{\circ} n

Solution steps

cos (x) cos (y) = 0

Using the Zero Factor Principle:

ab = 0

then

a = 0

b = 0

cos (x) = 0

General solutions for

cos (x) = 0

cos (x)

periodicity table with

2 πn

cycle:

x 0 \frac{π}{6} \frac{π}{4} \frac{π}{3} \frac{π}{2} \frac{2 π}{3} \frac{3 π}{4} \frac{5 π}{6} cos (x) 1 \frac{3}{2} \frac{2}{2} \frac{1}{2} 0 - \frac{1}{2} - \frac{2}{2} - \frac{3}{2} x π \frac{7 π}{6} \frac{5 π}{4} \frac{4 π}{3} \frac{3 π}{2} \frac{5 π}{3} \frac{7 π}{4} \frac{11 π}{6} cos (x) - 1 - \frac{3}{2} - \frac{2}{2} - \frac{1}{2} 0 \frac{1}{2} \frac{2}{2} \frac{3}{2}

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

x = \frac{π}{2} + 2 πn, x = \frac{3 π}{2} + 2 πn

3 sec (θ) = 6

cot (x) = csc (x) + 3

cos (x) \cdot cos (3 5^{\circ}) = 1 - sin (x) \cdot sin (3 5^{\circ})

sin (3 θ - 15) = 0.7

tan (x - \frac{π}{6}) = 1

What is the general solution for solvefor x,cos(x)*cos(y)=0 ?
The general solution for solvefor x,cos(x)*cos(y)=0 is x= pi/2+2pin,x=(3pi)/2+2pin