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| Description: Sine addition formula for complex arguments. Equation 14 of [Gleason] p. 310. |
| Ref | Expression |
|---|---|
| sinadd.1 |
|
| sinadd.2 |
|
| Ref | Expression |
|---|---|
| sinadd |
|
| Step | Hyp | Ref | Expression |
|---|---|---|---|
| 1 | sinadd.1 |
. . . 4
| |
| 2 | sinadd.2 |
. . . 4
| |
| 3 | 1, 2 | addcl 5292 |
. . 3
|
| 4 | sinvalt 7371 |
. . 3
| |
| 5 | 3, 4 | ax-mp 7 |
. 2
|
| 6 | cosclt 7374 |
. . . . . . . 8
| |
| 7 | 1, 6 | ax-mp 7 |
. . . . . . 7
|
| 8 | cosclt 7374 |
. . . . . . . 8
| |
| 9 | 2, 8 | ax-mp 7 |
. . . . . . 7
|
| 10 | 7, 9 | mulcl 5293 |
. . . . . 6
|
| 11 | axicn 5242 |
. . . . . . . 8
| |
| 12 | sinclt 7373 |
. . . . . . . . 9
| |
| 13 | 2, 12 | ax-mp 7 |
. . . . . . . 8
|
| 14 | 11, 13 | mulcl 5293 |
. . . . . . 7
|
| 15 | sinclt 7373 |
. . . . . . . . 9
| |
| 16 | 1, 15 | ax-mp 7 |
. . . . . . . 8
|
| 17 | 11, 16 | mulcl 5293 |
. . . . . . 7
|
| 18 | 14, 17 | mulcl 5293 |
. . . . . 6
|
| 19 | 10, 18 | addcl 5292 |
. . . . 5
|
| 20 | 7, 14 | mulcl 5293 |
. . . . . 6
|
| 21 | 9, 17 | mulcl 5293 |
. . . . . 6
|
| 22 | 20, 21 | addcl 5292 |
. . . . 5
|
| 23 | 19, 22, 22 | pnncan 5454 |
. . . 4
|
| 24 | 11, 1, 2 | adddi 5298 |
. . . . . . 7
|
| 25 | 24 | fveq2i 3712 |
. . . . . 6
|
| 26 | 11, 1 | mulcl 5293 |
. . . . . . 7
|
| 27 | 11, 2 | mulcl 5293 |
. . . . . . 7
|
| 28 | 26, 27 | efadd 7308 |
. . . . . 6
|
| 29 | efivalt 7389 |
. . . . . . . . 9
| |
| 30 | 1, 29 | ax-mp 7 |
. . . . . . . 8
|
| 31 | efivalt 7389 |
. . . . . . . . 9
| |
| 32 | 2, 31 | ax-mp 7 |
. . . . . . . 8
|
| 33 | 30, 32 | opreq12i 3958 |
. . . . . . 7
|
| 34 | 7, 17, 9, 14 | muladd 5398 |
. . . . . . 7
|
| 35 | 33, 34 | eqtr 1487 |
. . . . . 6
|
| 36 | 25, 28, 35 | 3eqtr 1491 |
. . . . 5
|
| 37 | 11 | negcl 5341 |
. . . . . . . 8
|
| 38 | 37, 1, 2 | adddi 5298 |
. . . . . . 7
|
| 39 | 38 | fveq2i 3712 |
. . . . . 6
|
| 40 | 37, 1 | mulcl 5293 |
. . . . . . 7
|
| 41 | 37, 2 | mulcl 5293 |
. . . . . . 7
|
| 42 | 40, 41 | efadd 7308 |
. . . . . 6
|
| 43 | efmivalt 7390 |
. . . . . . . . 9
| |
| 44 | 1, 43 | ax-mp 7 |
. . . . . . . 8
|
| 45 | efmivalt 7390 |
. . . . . . . . 9
| |
| 46 | 2, 45 | ax-mp 7 |
. . . . . . . 8
|
| 47 | 44, 46 | opreq12i 3958 |
. . . . . . 7
|
| 48 | 7, 17 | pm3.2i 285 |
. . . . . . . 8
|
| 49 | 9, 14 | pm3.2i 285 |
. . . . . . . 8
|
| 50 | mulsubt 5449 |
. . . . . . . 8
| |
| 51 | 48, 49, 50 | mp2an 695 |
. . . . . . 7
|
| 52 | 47, 51 | eqtr 1487 |
. . . . . 6
|
| 53 | 39, 42, 52 | 3eqtr 1491 |
. . . . 5
|