joeyfpurdy
New member
- Joined
- Feb 16, 2014
- Messages
- 1
1.) If cos θ = 2/3, what is tan θ? Show work.
2.) If sin θ = 1/2 and θ is in quadrant I, find in 2 θ. Show work.
3.) Prove cos(α - β) = cos α cos β + sin α sin β. Show work.
4.) Solve 2cos^2x - 3cosx + 1 = 0 for 0 ≤ x < 2 π. Show work.
5.) Solve 2sinx - 1 = 0 for 0° ≤ x < 360 °. Show work.
6.) Solve sin^2x = cos^2x for 0°≤ x < 360 °. Show work.
7.) Solve: sinx - 2sin x cos x = 0 for 0 ≤ x < 2 π. Show work.
Any help is appreciated, thank you for you time.
2.) If sin θ = 1/2 and θ is in quadrant I, find in 2 θ. Show work.
3.) Prove cos(α - β) = cos α cos β + sin α sin β. Show work.
4.) Solve 2cos^2x - 3cosx + 1 = 0 for 0 ≤ x < 2 π. Show work.
5.) Solve 2sinx - 1 = 0 for 0° ≤ x < 360 °. Show work.
6.) Solve sin^2x = cos^2x for 0°≤ x < 360 °. Show work.
7.) Solve: sinx - 2sin x cos x = 0 for 0 ≤ x < 2 π. Show work.
Any help is appreciated, thank you for you time.