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Mirrors > Home > ILE Home > Th. List > cosadd | Unicode version |
Description: Addition formula for cosine. Equation 15 of [Gleason] p. 310. (Contributed by NM, 15-Jan-2006.) (Revised by Mario Carneiro, 30-Apr-2014.) |
Ref | Expression |
---|---|
cosadd |
Step | Hyp | Ref | Expression |
---|---|---|---|
1 | addcl 7857 | . . 3 | |
2 | cosval 11600 | . . 3 | |
3 | 1, 2 | syl 14 | . 2 |
4 | coscl 11604 | . . . . . . . 8 | |
5 | 4 | adantr 274 | . . . . . . 7 |
6 | coscl 11604 | . . . . . . . 8 | |
7 | 6 | adantl 275 | . . . . . . 7 |
8 | 5, 7 | mulcld 7898 | . . . . . 6 |
9 | ax-icn 7827 | . . . . . . . 8 | |
10 | sincl 11603 | . . . . . . . . 9 | |
11 | 10 | adantl 275 | . . . . . . . 8 |
12 | mulcl 7859 | . . . . . . . 8 | |
13 | 9, 11, 12 | sylancr 411 | . . . . . . 7 |
14 | sincl 11603 | . . . . . . . . 9 | |
15 | 14 | adantr 274 | . . . . . . . 8 |
16 | mulcl 7859 | . . . . . . . 8 | |
17 | 9, 15, 16 | sylancr 411 | . . . . . . 7 |
18 | 13, 17 | mulcld 7898 | . . . . . 6 |
19 | 8, 18 | addcld 7897 | . . . . 5 |
20 | 5, 13 | mulcld 7898 | . . . . . 6 |
21 | 7, 17 | mulcld 7898 | . . . . . 6 |
22 | 20, 21 | addcld 7897 | . . . . 5 |
23 | 19, 22, 19 | ppncand 8226 | . . . 4 |
24 | adddi 7864 | . . . . . . . 8 | |
25 | 9, 24 | mp3an1 1306 | . . . . . . 7 |
26 | 25 | fveq2d 5472 | . . . . . 6 |
27 | simpl 108 | . . . . . . . 8 | |
28 | mulcl 7859 | . . . . . . . 8 | |
29 | 9, 27, 28 | sylancr 411 | . . . . . . 7 |
30 | simpr 109 | . . . . . . . 8 | |
31 | mulcl 7859 | . . . . . . . 8 | |
32 | 9, 30, 31 | sylancr 411 | . . . . . . 7 |
33 | efadd 11572 | . . . . . . 7 | |
34 | 29, 32, 33 | syl2anc 409 | . . . . . 6 |
35 | efival 11629 | . . . . . . . 8 | |
36 | efival 11629 | . . . . . . . 8 | |
37 | 35, 36 | oveqan12d 5843 | . . . . . . 7 |
38 | 5, 17, 7, 13 | muladdd 8291 | . . . . . . 7 |
39 | 37, 38 | eqtrd 2190 | . . . . . 6 |
40 | 26, 34, 39 | 3eqtrd 2194 | . . . . 5 |
41 | negicn 8076 | . . . . . . . 8 | |
42 | adddi 7864 | . . . . . . . 8 | |
43 | 41, 42 | mp3an1 1306 | . . . . . . 7 |
44 | 43 | fveq2d 5472 | . . . . . 6 |
45 | mulcl 7859 | . . . . . . . 8 | |
46 | 41, 27, 45 | sylancr 411 | . . . . . . 7 |
47 | mulcl 7859 | . . . . . . . 8 | |
48 | 41, 30, 47 | sylancr 411 | . . . . . . 7 |
49 | efadd 11572 | . . . . . . 7 | |
50 | 46, 48, 49 | syl2anc 409 | . . . . . 6 |
51 | efmival 11630 | . . . . . . . 8 | |
52 | efmival 11630 | . . . . . . . 8 | |
53 | 51, 52 | oveqan12d 5843 | . . . . . . 7 |
54 | 5, 17, 7, 13 | mulsubd 8292 | . . . . . . 7 |
55 | 53, 54 | eqtrd 2190 | . . . . . 6 |
56 | 44, 50, 55 | 3eqtrd 2194 | . . . . 5 |
57 | 40, 56 | oveq12d 5842 | . . . 4 |
58 | 19 | 2timesd 9075 | . . . 4 |
59 | 23, 57, 58 | 3eqtr4d 2200 | . . 3 |
60 | 59 | oveq1d 5839 | . 2 |
61 | 2cn 8904 | . . . . 5 | |
62 | 2ap0 8926 | . . . . 5 # | |
63 | divcanap3 8571 | . . . . 5 # | |
64 | 61, 62, 63 | mp3an23 1311 | . . . 4 |
65 | 19, 64 | syl 14 | . . 3 |
66 | 9 | a1i 9 | . . . . . 6 |
67 | 66, 11, 66, 15 | mul4d 8030 | . . . . 5 |
68 | ixi 8458 | . . . . . . 7 | |
69 | 68 | oveq1i 5834 | . . . . . 6 |
70 | 11, 15 | mulcomd 7899 | . . . . . . 7 |
71 | 70 | oveq2d 5840 | . . . . . 6 |
72 | 69, 71 | syl5eq 2202 | . . . . 5 |
73 | 15, 11 | mulcld 7898 | . . . . . 6 |
74 | 73 | mulm1d 8285 | . . . . 5 |
75 | 67, 72, 74 | 3eqtrd 2194 | . . . 4 |
76 | 75 | oveq2d 5840 | . . 3 |
77 | 8, 73 | negsubd 8192 | . . 3 |
78 | 65, 76, 77 | 3eqtrd 2194 | . 2 |
79 | 3, 60, 78 | 3eqtrd 2194 | 1 |
Colors of variables: wff set class |
Syntax hints: wi 4 wa 103 wceq 1335 wcel 2128 class class class wbr 3965 cfv 5170 (class class class)co 5824 cc 7730 cc0 7732 c1 7733 ci 7734 caddc 7735 cmul 7737 cmin 8046 cneg 8047 # cap 8456 cdiv 8545 c2 8884 ce 11539 csin 11541 ccos 11542 |
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 604 ax-in2 605 ax-io 699 ax-5 1427 ax-7 1428 ax-gen 1429 ax-ie1 1473 ax-ie2 1474 ax-8 1484 ax-10 1485 ax-11 1486 ax-i12 1487 ax-bndl 1489 ax-4 1490 ax-17 1506 ax-i9 1510 ax-ial 1514 ax-i5r 1515 ax-13 2130 ax-14 2131 ax-ext 2139 ax-coll 4079 ax-sep 4082 ax-nul 4090 ax-pow 4135 ax-pr 4169 ax-un 4393 ax-setind 4496 ax-iinf 4547 ax-cnex 7823 ax-resscn 7824 ax-1cn 7825 ax-1re 7826 ax-icn 7827 ax-addcl 7828 ax-addrcl 7829 ax-mulcl 7830 ax-mulrcl 7831 ax-addcom 7832 ax-mulcom 7833 ax-addass 7834 ax-mulass 7835 ax-distr 7836 ax-i2m1 7837 ax-0lt1 7838 ax-1rid 7839 ax-0id 7840 ax-rnegex 7841 ax-precex 7842 ax-cnre 7843 ax-pre-ltirr 7844 ax-pre-ltwlin 7845 ax-pre-lttrn 7846 ax-pre-apti 7847 ax-pre-ltadd 7848 ax-pre-mulgt0 7849 ax-pre-mulext 7850 ax-arch 7851 ax-caucvg 7852 |
This theorem depends on definitions: df-bi 116 df-dc 821 df-3or 964 df-3an 965 df-tru 1338 df-fal 1341 df-nf 1441 df-sb 1743 df-eu 2009 df-mo 2010 df-clab 2144 df-cleq 2150 df-clel 2153 df-nfc 2288 df-ne 2328 df-nel 2423 df-ral 2440 df-rex 2441 df-reu 2442 df-rmo 2443 df-rab 2444 df-v 2714 df-sbc 2938 df-csb 3032 df-dif 3104 df-un 3106 df-in 3108 df-ss 3115 df-nul 3395 df-if 3506 df-pw 3545 df-sn 3566 df-pr 3567 df-op 3569 df-uni 3773 df-int 3808 df-iun 3851 df-disj 3943 df-br 3966 df-opab 4026 df-mpt 4027 df-tr 4063 df-id 4253 df-po 4256 df-iso 4257 df-iord 4326 df-on 4328 df-ilim 4329 df-suc 4331 df-iom 4550 df-xp 4592 df-rel 4593 df-cnv 4594 df-co 4595 df-dm 4596 df-rn 4597 df-res 4598 df-ima 4599 df-iota 5135 df-fun 5172 df-fn 5173 df-f 5174 df-f1 5175 df-fo 5176 df-f1o 5177 df-fv 5178 df-isom 5179 df-riota 5780 df-ov 5827 df-oprab 5828 df-mpo 5829 df-1st 6088 df-2nd 6089 df-recs 6252 df-irdg 6317 df-frec 6338 df-1o 6363 df-oadd 6367 df-er 6480 df-en 6686 df-dom 6687 df-fin 6688 df-sup 6928 df-pnf 7914 df-mnf 7915 df-xr 7916 df-ltxr 7917 df-le 7918 df-sub 8048 df-neg 8049 df-reap 8450 df-ap 8457 df-div 8546 df-inn 8834 df-2 8892 df-3 8893 df-4 8894 df-n0 9091 df-z 9168 df-uz 9440 df-q 9529 df-rp 9561 df-ico 9798 df-fz 9913 df-fzo 10042 df-seqfrec 10345 df-exp 10419 df-fac 10600 df-bc 10622 df-ihash 10650 df-cj 10742 df-re 10743 df-im 10744 df-rsqrt 10898 df-abs 10899 df-clim 11176 df-sumdc 11251 df-ef 11545 df-sin 11547 df-cos 11548 |
This theorem is referenced by: tanaddaplem 11635 tanaddap 11636 cossub 11638 sinmul 11641 cosmul 11642 addcos 11643 subcos 11644 sincossq 11645 cos2t 11647 cos12dec 11664 demoivreALT 11670 cosppi 13139 coshalfpip 13143 |
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