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Mirrors > Home > ILE Home > Th. List > addcos | Unicode version |
Description: Sum of cosines. (Contributed by Paul Chapman, 12-Oct-2007.) |
Ref | Expression |
---|---|
addcos |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | coscl 11663 | . . 3 | |
2 | coscl 11663 | . . 3 | |
3 | addcom 8049 | . . 3 | |
4 | 1, 2, 3 | syl2an 287 | . 2 |
5 | halfaddsub 9105 | . . . . 5 | |
6 | 5 | simprd 113 | . . . 4 |
7 | 6 | fveq2d 5498 | . . 3 |
8 | 5 | simpld 111 | . . . 4 |
9 | 8 | fveq2d 5498 | . . 3 |
10 | 7, 9 | oveq12d 5869 | . 2 |
11 | halfaddsubcl 9104 | . . . . 5 | |
12 | coscl 11663 | . . . . . 6 | |
13 | coscl 11663 | . . . . . 6 | |
14 | mulcl 7894 | . . . . . 6 | |
15 | 12, 13, 14 | syl2an 287 | . . . . 5 |
16 | 11, 15 | syl 14 | . . . 4 |
17 | sincl 11662 | . . . . . 6 | |
18 | sincl 11662 | . . . . . 6 | |
19 | mulcl 7894 | . . . . . 6 | |
20 | 17, 18, 19 | syl2an 287 | . . . . 5 |
21 | 11, 20 | syl 14 | . . . 4 |
22 | 16, 21, 16 | ppncand 8263 | . . 3 |
23 | cossub 11697 | . . . . 5 | |
24 | cosadd 11693 | . . . . 5 | |
25 | 23, 24 | oveq12d 5869 | . . . 4 |
26 | 11, 25 | syl 14 | . . 3 |
27 | 16 | 2timesd 9113 | . . 3 |
28 | 22, 26, 27 | 3eqtr4d 2213 | . 2 |
29 | 4, 10, 28 | 3eqtr2d 2209 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wceq 1348 wcel 2141 cfv 5196 (class class class)co 5851 cc 7765 caddc 7770 cmul 7772 cmin 8083 cdiv 8582 c2 8922 csin 11600 ccos 11601 |
This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-ia1 105 ax-ia2 106 ax-ia3 107 ax-in1 609 ax-in2 610 ax-io 704 ax-5 1440 ax-7 1441 ax-gen 1442 ax-ie1 1486 ax-ie2 1487 ax-8 1497 ax-10 1498 ax-11 1499 ax-i12 1500 ax-bndl 1502 ax-4 1503 ax-17 1519 ax-i9 1523 ax-ial 1527 ax-i5r 1528 ax-13 2143 ax-14 2144 ax-ext 2152 ax-coll 4102 ax-sep 4105 ax-nul 4113 ax-pow 4158 ax-pr 4192 ax-un 4416 ax-setind 4519 ax-iinf 4570 ax-cnex 7858 ax-resscn 7859 ax-1cn 7860 ax-1re 7861 ax-icn 7862 ax-addcl 7863 ax-addrcl 7864 ax-mulcl 7865 ax-mulrcl 7866 ax-addcom 7867 ax-mulcom 7868 ax-addass 7869 ax-mulass 7870 ax-distr 7871 ax-i2m1 7872 ax-0lt1 7873 ax-1rid 7874 ax-0id 7875 ax-rnegex 7876 ax-precex 7877 ax-cnre 7878 ax-pre-ltirr 7879 ax-pre-ltwlin 7880 ax-pre-lttrn 7881 ax-pre-apti 7882 ax-pre-ltadd 7883 ax-pre-mulgt0 7884 ax-pre-mulext 7885 ax-arch 7886 ax-caucvg 7887 |
This theorem depends on definitions: df-bi 116 df-dc 830 df-3or 974 df-3an 975 df-tru 1351 df-fal 1354 df-nf 1454 df-sb 1756 df-eu 2022 df-mo 2023 df-clab 2157 df-cleq 2163 df-clel 2166 df-nfc 2301 df-ne 2341 df-nel 2436 df-ral 2453 df-rex 2454 df-reu 2455 df-rmo 2456 df-rab 2457 df-v 2732 df-sbc 2956 df-csb 3050 df-dif 3123 df-un 3125 df-in 3127 df-ss 3134 df-nul 3415 df-if 3526 df-pw 3566 df-sn 3587 df-pr 3588 df-op 3590 df-uni 3795 df-int 3830 df-iun 3873 df-disj 3965 df-br 3988 df-opab 4049 df-mpt 4050 df-tr 4086 df-id 4276 df-po 4279 df-iso 4280 df-iord 4349 df-on 4351 df-ilim 4352 df-suc 4354 df-iom 4573 df-xp 4615 df-rel 4616 df-cnv 4617 df-co 4618 df-dm 4619 df-rn 4620 df-res 4621 df-ima 4622 df-iota 5158 df-fun 5198 df-fn 5199 df-f 5200 df-f1 5201 df-fo 5202 df-f1o 5203 df-fv 5204 df-isom 5205 df-riota 5807 df-ov 5854 df-oprab 5855 df-mpo 5856 df-1st 6117 df-2nd 6118 df-recs 6282 df-irdg 6347 df-frec 6368 df-1o 6393 df-oadd 6397 df-er 6511 df-en 6717 df-dom 6718 df-fin 6719 df-sup 6959 df-pnf 7949 df-mnf 7950 df-xr 7951 df-ltxr 7952 df-le 7953 df-sub 8085 df-neg 8086 df-reap 8487 df-ap 8494 df-div 8583 df-inn 8872 df-2 8930 df-3 8931 df-4 8932 df-n0 9129 df-z 9206 df-uz 9481 df-q 9572 df-rp 9604 df-ico 9844 df-fz 9959 df-fzo 10092 df-seqfrec 10395 df-exp 10469 df-fac 10653 df-bc 10675 df-ihash 10703 df-cj 10799 df-re 10800 df-im 10801 df-rsqrt 10955 df-abs 10956 df-clim 11235 df-sumdc 11310 df-ef 11604 df-sin 11606 df-cos 11607 |
This theorem is referenced by: (None) |
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