Home
Class 11
MATHS
If cos A =3/5, cos B=4/5 and (-pi)/(2) l...

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=`

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 sin 4 A - cos 2A = cos 4A - sin 2A (0 lt A lt (pi)/(4)), then the value of tan 4A= ................. A) 1 B) (1)/(sqrt3) C) sqrt3 D) (sqrt3-1)/(sqrt3+1)

sec theta =- 3 and pi lt theta lt (3pi)/(2) then find the values of other trigonometric functions.

If 3 cot A =-6, sec B =-2 sqrt10, where pi /2 lt A lt pi , pi lt B lt (3pi)/(2), then cosec A- tan B is equal to ................... A) 1 B) -1 C) sqrt5-sqrt39 D) sqrt5+sqrt39

If tan x = 3/4, pi lt x lt (3pi)/(2), then the value of cos ""x/2 is ............... A) -(1)/(sqrt10) B) (3)/(sqrt10) C) (1)/(sqrt10) D) -(3)/(sqrt10)

If x in [0. (pi)/(2)], y in [0, (pi)/(2)] and sin x + cos y =2, then the value of x+y is equal to........ A) 2pi B) pi C) pi/4 D) pi/2

If sin4A-cos2A=cos4A-sin2A 0<(A)<(pi/4) then the value of tan 4A=

If sin(pi cos theta) = cos(pi sin theta) , then of the value cos(theta- pi/4) is

If pi/2 lt theta lt (3pi)/2 , then sqrt((1-sin theta)/(1+sin theta)) is equal to