Home
Class 11
MATHS
If (cos A)/3= (cos B)/3 = 1/5, - pi/2 l...

If ` (cos A)/3= (cos B)/3 = 1/5, - pi/2 lt A lt 0 and - pi/2 lt B lt 0` then the value of ` 2 sin A + 4 sin B` is

A

4

B

`-2`

C

`-4`

D

0

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Similar Questions

Explore conceptually related problems

If (cos A)/3= (cos B)/4= 1/5, - pi/2 lt A lt 0 and - pi/2 lt B lt 0 then the value of 2 sin A + 4 sin B is

If cos A =3/5, cos B=4/5 and (-pi)/(2) lt A lt 0,(-pi)/(2) lt B lt 0, then the value of 2 sin A+4 sin B=

If 0 lt A lt pi//2 and cos A =4//5 , find the value of sin 2A.

If tan x = 3/4, pi lt x lt (3pi)/(2), then the value of cos ""x/2 is

If cosA=-sqrt(3)/2, sinB=-5/13 , where pi/2 lt A lt pi, (3pi)/(2) lt B lt 2pi , find the value of tan(A-B) .

If (cos A)/(3)=(cos B)/(4)=(1)/(5)-(pi)/(2)

If sin A = (1)/(2) , cos B = 1, 0 lt A, B le (pi)/(2) then find the value of (A + B).