Saved Bookmarks
| 1. |
If sin (A + B) and cos (A-B) = 1 find)the value of A and B.- |
|
Answer» Answer: A = B = 45 Step-by-step explanation: sin ( A + B ) = 1 sin 90 = 1 A + B = 90 -----> EQ 1. cos ( A - B ) = 1 cos 0 = 1 A - B = 0 A = B Substitute in eq 1, A + B = 90 A + A = 90 2A = 90 A = 90 / 2 A = 45 Substitute A = 45 in eq 1, 45 + B = 90 B = 90 - 45 B = 45 Therefore, A = B = 45 |
|