Post a New Question

trig 30

posted by .

If cos^2 theta -6 sin 2 theta =0, one value of theta is a)0 degrees b) 90 degrees c)180 degrees or D)255 degrees.
Please show me how to do it and not just give answer cause I have two more questions that are similar. Thanks so much.

  • trig 30 -

    cos^2 Ø - 6sin 2Ø = 0
    cos^2Ø - 12sinØcosØ = 0
    cosØ(cosØ - 12sinØ) = 0
    cos Ø = 0 or 12sinØ = cosØ
    Ø = 90 degrees or ......

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

More Related Questions

Post a New Question