Solve for 2 cos x+sqrt2 =0 for o pi/4 3pi/4 5pi/4 7pi/4 it's 3pi/ 4 and 5pi/4

asked Jun 22, 2023 188k views

4 votes

Solve for 2 cos x+sqrt2 =0 for o

pi/4

3pi/4

5pi/4

7pi/4

it's 3pi/ 4 and 5pi/4

6.8k points

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5 votes

Answer:

$(3\pi )/(4) \ and \ (5\pi )/(4) .$

Explanation:

$1. \ cosx=-(√(2) )/(2);\\x=^+_-(3 \pi)/(4)+2 \pi n, \ where \ n=Z.$

2. finally, the answer is

$(3\pi )/(4) \&(5\pi )/(4) .$

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