filmov
tv
`(b-c)/acos^2 (A/2)+(c-a)/bcos^2(B/2)+(a-b)/c cos^2(C/2)=`
Показать описание
Doubtnut
Рекомендации по теме
0:05:40
`(b-c)/a cos^2(A/2)+(c-a)/bcos^2(B/2)+(a-b)/c cos^2(C/2)=`
0:02:50
`(b-c)/acos^2 (A/2)+(c-a)/bcos^2(B/2)+(a-b)/c cos^2(C/2)=`
0:06:09
In any `DeltaABC`, prove that `4(bc cos^(2)\'\'A/2+ca cos^(2)\'\'B/2+ab cos^(2)\...
0:04:57
If in a `DeltaABC acos^2 (c/2) + c cos^2 (A/2) = (3b)/2` , then the sides a, b and c
0:03:05
In `DeltaABC`, prove that: `(bcos^(2)C)/2+(c cos^(2)B)/2=s`
0:04:32
aCos²A/2+bCos²B/2+cCos²C/2=S+∆/R ||properties of Triangles||
0:06:12
Show that `aCos^2[A/2]+ bCos^2[B/2]+ c Cos^2[C/2]=s+D/R`
0:02:52
In `DeltaABC`, with usual notations, if a,b,c are in AP then `acos^(2)((C)/(2))+cos^(2)((A)/(2))=`
0:03:45
In a `Delta A B C ,` prove that: `((b^2-c^2)/(a^2))sin2A+((c^2-a^2)/(b^2))sin2B+((a^2-b^2)/(c^
0:03:08
If `A+B+C=pi`, then `cos^(2)A+cos^(2)B+cos^(2)C` is equal to
0:02:43
In any ` A B C` , prove that: `2{b cos^2(C/2) + c cos^2(B/2)}=a+c+b`
0:01:22
If in a triangle ABC a cos^2〖C/2+c cos^2〖A/2=3b/2,〗 〗 then the sides of the triangle are in...
0:07:29
Proof of Cos^2 A/2 + Cos^2 B/2 - Cos^2 C/2 = 2 Cos A/2 Cos B/2 Sin C/2
0:10:44
if A+B+C=180 Prove that sin^2(A)+sin^2(B)+sin^2(c)=2+2cosA.cosB.cosc
0:04:35
If in a triangle ABC, a cos ^(2)C/2+ c cos ^(2)A/2=(3b)/(2), then the sides a, b and c- | 12 | M...
0:01:13
In any `DeltaABC`, prove that : `2(b cos^2 (C/2) + c cos^2 (B/2)) = a+b+c`
0:03:39
In `Delta ABC, (b-c)/a cos^2 (A/2) + (c-a)/b cos^2(B/2) + (a-b)/c cos^2 (C/2)=`
0:11:49
Integral of 1/a Sin^2 X + b Cos^2 X + c | Integration
0:03:26
In `triangle ABC`, prove that `2(bc cos A +ac cos B +ab cos C)=a^2+b&2+c^2`.
0:03:19
If a cos theta - b sin theta = c ,prove that a sin theta + b cos theta =+/- root a²+b²-c²
0:06:16
(vii) (b^(2) -c^(2)) cos 2A + (c^(2) -a^(2)) cos 2B + (a^(2) -b^(2)) cos 2C=0 | 12 | PROPERTIES...
0:01:59
For any triangle ABC, prove that `a(bcosC-c cosB)=b^2-c^2`...
0:02:51
Cos²A/2+Cos²B/2+Cos²C/2=2+r/2R || properties of Triangles||
0:18:34
12a) If A+B+C=πᶜ, prove that cos(B+ 2C)+cos(C+2A)+cos(A+2B) = 1-4cos(A-B)/2. cos(B-C)/2.cos(C-A)/2...