Home
Class 11
MATHS
In Delta ABC, (cos C+ cos A)/(c+a)+(cos ...

In `Delta ABC, (cos C+ cos A)/(c+a)+(cos B)/b=`

A

` (1)/(a) `

B

` ( 1) /(b) `

C

` ( 1 ) / ( c ) `

D

` ( c+ a)/( b) `

Text Solution

Verified by Experts

The correct Answer is:
B
Promotional Banner

Topper's Solved these Questions

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise EXERCISE - II|148 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise PRACTICE EXERCISE|132 Videos

  • PROPERTIES OF TRIANGLES

    AAKASH SERIES|Exercise ADDITIONAL EXERCISE|12 Videos

  • PLANES

    AAKASH SERIES|Exercise ADVANCED SUBJECTIVE TYPE QUESTIONS|30 Videos

  • PROPERTIES OF VECTORS

    AAKASH SERIES|Exercise PRACTICE EXERCISES|55 Videos

Similar Questions

Explore conceptually related problems

In Delta ABC,a(b cos C-c cos B)=

In Delta ABC, cos A + cos (B-C)=

In Delta ABC, (b-a cos C)/(c-a cos B)=

In Delta ABC , a( b cos C - c cos B) =

In Delta ABC, (cos A)/(c sin B)+(cos B)/( a sin C)+(cos C)/( b sin A) =

In Delta ABC, if (2 cos A)/a+ (cos B)/b+ (2 cos C)/c=a/(bc)+b/(ca) , then A=

In Delta ABC , (a)/( cos A) = (b) /( cos B ) = ( c ) /( cos C ) , If b= 2 then the area of the triangle is

In Delta ABC , ( bc cos A + c a cos B + ab cos C) /( cot A + cot B + cot C )=

In Delta ABC , prove that cos. (A)/(2)+cos. (B)/(2) - cos .(C)/(2)=4cos .(pi+A)/(4) cos. (pi+B)/(4) cos. (pi-C)/(4)

In a Delta ABC, a (cos^2 B+cos^2 C)+cos A(c cos C+b cos B)=