Text Solution
AI Generated Solution
|
RD SHARMA ENGLISH-SINE AND COSINE FORMULAE AND THEIR APPLICATIONS-All Questions
- Two boats leave a place at the same time. One travels 56 km in the dir...
05:57
|
- In any triangle A B C , prove that: a^3cos(B-C)+b^3cos(C-A)+c^3cos(A-B...
08:18
|
- With usual notations, if in a triangle A B C(b+c)/(11)=(c+a)/(12)=(a+b...
05:48
|
- If a^2,b^2,c^2 are in A.P., prove that cotA ,cotB ,cotC are in AdotPdo...
03:31
|
- If in a triangle A B C ,cosA+2cosB+cosC=2 prove that the sides of the ...
09:59
|
- In a triangle A B C ,/C=60^0, then prove that: 1/(a+c)+1/(b+c)=3/(a+b+...
06:42
|
- Prove that b(c cosA-acosC)=c^2-a^2
01:51
|
- 2(bc cosA+c acosB+a bcosC)=a^2+b^2+c^2
01:42
|
- In a A B C , if /B=60^0 , prove that (a+b+c)(a-b+c)=3c a
03:18
|
- In any DeltaABC , prove that: (sinB)/(sinC)=(c-acosB)/(b-acosC)
05:10
|
- In any A B C , prove that: 2{asin^2C/2+csin^2A/2}=a+c-b
03:16
|
- In any A B C , prove that: 2{b cos^2(C/2) + c cos^2(B/2)}=a+c+b
02:35
|
- In any A B C , prove that: (b+c)cos A+(c+a)cos B+(a+b)cos C=a+b+c
03:37
|
- For any triangle ABC, prove that a(bcosC-c cosB)=b^2-c^2
03:19
|
- In a Delta A B C ,if a=2,/B=60^0a n d/C=75^0 , then b= (a)sqrt(3) ...
03:39
|
- If a^2,b^2,c^2 are in A.P., prove that cotA ,cotB ,cotC are in AdotPdo...
05:41
|
- In any triangle A B C , prove that: (1+cos(A-B)cos C)/(1+cos(A-C)cos B...
04:54
|
- In any triangle. if(a^2-b^2)/(a^2+b^2)=("sin"(A-B))/("sin"(A+B)) , the...
08:32
|
- For any triangle ABC, prove that acosA+bcosB+ccosC=2asinBsinC
05:36
|
- In any triangle A B C , prove that: (b-c)cot (A/2)+(c-a)cot (B/2)+(a-b...
11:05
|