Hi.... Someone please help me solve the range...

[JanicaKoleman]

To those who can help me solve this, I owe u a virtual hug! My professor didn't teach this but he made this as our homework. Can somebody help me solve it? I'm trying for an hour, but I can't get the correct answers. Thanks a lot.... <3

 

[lev888]

Double angle identities should be helpful.

 

[ukumure]

Double angle identities should be helpful.

Oh, alright! Thank you so much! <3

 

[lev888]

Oh, alright! Thank you so much! <3

And maybe sin² + cos² = 1.

 

[ukumure]

And maybe sin² + cos² = 1.

I'll try to solve using that formula. Thank you once again! Really appreciate your help

 

[Steven G]

What results did you get?

 

[JanicaKoleman]

T

And maybe sin² + cos² = 1.

Thank you.... I already got the answer! Thanks for your help <333

 

[JanicaKoleman]

Double angle identities should be helpful.

I tried and it helped... thank you for helping me out <3