What is the general solution for cos(a)= 7/25 ?

The general solution for cos(a)= 7/25 is a=1.28700…+2pin,a=2pi-1.28700…+2pin

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cos(a)= 7/25

cos (a) = \frac{7}{25}

a = 1.28700 \dots + 2 πn, a = 2 π - 1.28700 \dots + 2 πn

Degrees

a = 73.73979 \dots^{\circ} + 36 0^{\circ} n, a = 286.26020 \dots^{\circ} + 36 0^{\circ} n

Solution steps

cos (a) = \frac{7}{25}

Apply trig inverse properties

cos (a) = \frac{7}{25}

General solutions for

cos (a) = \frac{7}{25}

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

a = arccos (\frac{7}{25}) + 2 πn, a = 2 π - arccos (\frac{7}{25}) + 2 πn

a = arccos (\frac{7}{25}) + 2 πn, a = 2 π - arccos (\frac{7}{25}) + 2 πn

Show solutions in decimal form

a = 1.28700 \dots + 2 πn, a = 2 π - 1.28700 \dots + 2 πn

What is the general solution for cos(a)= 7/25 ?
The general solution for cos(a)= 7/25 is a=1.28700…+2pin,a=2pi-1.28700…+2pin