sec4 A− tan4 A = (Sec2A -Tan2A) ×(Sec2+tan2A) As we know that – Sec2A -Tan2A =1 sec4 A− tan4 A =1×4/17 =4/17.
21, 44, 78, 121, 179, 246
14, 16, 22, 46, 172, 886
2100, 2140, 2186, 2240, 2300, 2372
15, 30, 30, 20, 10, 8
97, 98, 107, 132, 181, 264
1152 3456 432 1296 164 486
3, 4, 9, 28, 116, 566, 3397
66, 220, 384, 543, 702, 861
20.5, 30, 40.5, 53, 64.5, 78
44, 57, 81, 119, 170, 234, 311.
