1. 2
2. 1
3. 3
4. 4
1
1. 1/2
2. 0
3. 1/4
4. 3/4
1/4
1. h sin(β- α)
2. h cos (β- α)
3. -(h sin(β- α)) /( cos α sin β)
4. h sin β sin α
-(h sin(β- α)) /( cos α sin β)
1. x+y = 2
2. x2+y2 =1
3. x2+y2 = 2
4. x2+y2 = 4
x<sup>2</sup>+y<sup>2</sup> =1
1. 6ab
2. 12ab
3. 8a2b2
4. 4a2b2
6ab
1. 0
2. 1
3. 2
4. 3
2
1. 8
2. 12
3. 16
4. 32
32
1. x2-y2=9
2. x2-y2= -9
3. x2+y2=9
4. x2+y2=3
x<sup>2</sup>+y<sup>2</sup>=9
1. π/3
2. π/6
3. π/2
4. π/4
π/6
1. (k,k)
2. (1/k,1/k)
3. (1,1)
4. (k,1/k)
(1/k,1/k)