1. ∠5∠4∠2 /∠11
2. ∠3∠5∠4∠2 /∠11
3. ∠5∠6 /∠11
4. 3!5!4! / 11!
∠3∠5∠4∠2 /∠11
1. 1/4
2. 1/3
3. 1/2
4. 1/5
1/2
1. x2 + y2 =c2
2. x2 - y2 =2c
3. x2 - y2 =c2
4. x2 - y =c2
x2 - y2 =2c
1. 1/128
2. 5/128
3. 7/128
4. 3/128
7/128
1. (1, 1); √2
2. (1/2, 1/2); √2
3. (1/2, 1/2); 1/√2
4. (0, 0); 1
(1/2, 1/2); 1/√2
1. 10
2. 12
3. 18
4. 9
9
1. 1, c/a
2. -1, c/a
3. -1, -c/a
4. a, -c/a
-1, -c/a
1. 5/32
2. 1/32
3. 31/32
4. 4/32
31/32
1. 1/3
2. 2/3
3. 1/2
4. 1/4
1/3
1. 1/6
2. 2/3
3. 1/4
4. 1/2
1/4