Solve: sin2 x = cos2

cos²(θ) – 3sin(θ) – sin²(θ)= –2____________________________ I am having a hard time figuring out what to do. Do I use
1. 2 answers
2. asked by sweetiepie
3. 531 views
Solve the following trigonometry identities.a) 1-cos2(theta) = sin(theta)cos(theta)/cot(theta) b)
1. 1 answer
2. asked by Zoë
3. 742 views
a. Given that sin2 𝑥, cos2 𝑥 𝑎𝑛𝑑 5cos2𝑥 − 3sin2 𝑥 are in arithmetic progression, find the value ofi.
1. 3 answers
2. asked by Benny
3. 161 views
prove that: sin²(3x) + cos²(3x) + sin²(x) - cos²(x) = 0
1. 5 answers
2. asked by yang
3. 1,293 views
1. Solve: 2 cos² x - 3 cos x + 1 = 0 for 0 ≤ x < 2pi.2. Solve: 2 sin x - 1 = 0 for 0° ≤ x < 360° 3. Solve: sin² x =
1. 0 answers
2. asked by Tabby
3. 623 views
1. Solve: 2 cos² x - 3 cos x + 1 = 0 for 0 ≤ x < 2pi.2. Solve: 2 sin x - 1 = 0 for 0° ≤ x < 360° 3. Solve: sin² x =
1. 0 answers
2. asked by CJ
3. 597 views
Use fundamental Identities to find the exact value of the expression. Do not use a calculator.Sin² 65° + cos² 65°=??.. How
1. 2 answers
2. asked by Amber
3. 694 views
The expression 4 - cos² A is equivalent to1)5 - sec² A 2)5 - sin² A 3)5 + sin² A 4)5/sec² A
1. 1 answer
2. asked by Moe
3. 682 views
ʃ sin² cos² dx
1. 1 answer
2. asked by zainab
3. 515 views
8 sin²(3x) cos²(3x) = 2 [2 sin(3x) cos(3x)]²= 2 [sin(6x)]² = 2[1 - cos(12x)]/2 = 1 - cos(12x)
1. 1 answer
2. asked by Carry
3. 1,037 views