1. a2+b2=l2+m2
2. a2-b2=l2-m2
3. a2-b2=l2+m2
4. a2+b2=l2-m2
a2-b2=l2+m2
1. 0
2. π/4
3. π/3
4. π/2
π/2
1. 2
2. 4
3. 9/2
4. none
9/2
1. π/6
2. π/4
3. π/3
4. π/2
π/2
1. √10
2. 2√10
3. 2√10/3
4. 6
2√10/3
1.
2.
3.
4.
1. √325/2
2. 3√325/17
3. 17/2
4. 18/17
3√325/17
1. a sin2θ
2. a sin2θ tanθ
3. a sin2θ cosθ
4. a sin4θ secθ
a sin2θ
1. √5
2. 2√5
3. 1
4. 4
2√5
1. y/c
2. y2/c
3. 2y/c
4. 2y2/c
y2/c