What is the general solution for cos(x)=-0.71 ?

The general solution for cos(x)=-0.71 is x=2.36029…+2pin,x=-2.36029…+2pin

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cos(x)=-0.71

cos (x) = - 0.71

x = 2.36029 \dots + 2 πn, x = - 2.36029 \dots + 2 πn

Degrees

x = 135.23491 \dots^{\circ} + 36 0^{\circ} n, x = - 135.23491 \dots^{\circ} + 36 0^{\circ} n

Solution steps

cos (x) = - 0.71

Apply trig inverse properties

cos (x) = - 0.71

General solutions for

cos (x) = - 0.71

cos (x) = - a \Rightarrow x = arccos (- a) + 2 πn, x = - arccos (- a) + 2 πn

x = arccos (- 0.71) + 2 πn, x = - arccos (- 0.71) + 2 πn

x = arccos (- 0.71) + 2 πn, x = - arccos (- 0.71) + 2 πn

Show solutions in decimal form

x = 2.36029 \dots + 2 πn, x = - 2.36029 \dots + 2 πn

tan (α) = \frac{8}{10}

sin (2 x) + 2 \cdot cos (x) = 0

\frac{6.7}{sin ( 3 3 ^{\circ} )} = \frac{5.4}{sin ( A )}

2 - 3 sin (θ) = 0

cos (x) = - 0.83

What is the general solution for cos(x)=-0.71 ?
The general solution for cos(x)=-0.71 is x=2.36029…+2pin,x=-2.36029…+2pin