1. a2+b2=2h2
2. a2+b2=h2
3. (a+b)2=h2
4. (a+b)2=4h2
(a+b)<sup>2</sup>=4h<sup>2</sup>
1. x = 0
2. y = 0
3. x = 1
4. y = 1
x = 0
1. 2x+y-1=0
2. 2x-y-1=0
3. x+2y-1=0
4. 2x+y+1=0
2x-y-1=0
1. x+y=2
2. x+y+2=0
3. x-y=2
4. 2x-y=2
x-y=2
1. (1,1)
2. (-1,-1)
3. (1,-1)
4. (-1,1)
(1,1)
1. tan-1(3/4)
2. tan-1(3/5)
3. tan-1(4/3)
4. tan-1(5/3)
tan<sup>-1</sup>(3/5)
1. 2.1%
2. 2.5%
3. 3.2%
4. 3.3%
2.1\%
1. 2
2. 3
3. 4
4. 1
4
1. 2%
2. 2.5%
3. 1.8%
4. 1.5%
1.5\%
1. 256sin8(θ/2)(cos4θ+isin4θ)
2. 256cos8(θ/2)(cos4θ-isin4θ)
3. 256sin8(θ/2)(sin4θ-icos4θ)
4. 256sin8(θ/2)(cos4θ - isin4θ)
256sin<sup>8</sup>(θ/2)(cos4θ - isin4θ)