+0  
 
+1
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solve the equation on the interval 0 ≤ θ < 2π

 

sin^(2)(2θ )=1

 May 12, 2021
 #1
avatar+32900 
+2

Take the sqrt of both sides to get:

sin ( 2 theta) = +-1

2 theta = pi/2    3 pi /2

theta = pi/4      3pi/4  

 May 12, 2021
 #2
avatar+32900 
+1

Yep.....THANX ,Chris for noting my error:

Per Chris:

we also  need    5pi/4   and 7pi/4  as  answers  for  "theta "  

 

     ~EP

ElectricPavlov  May 12, 2021
edited by ElectricPavlov  May 12, 2021

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