Home
Class 12
MATHS
In DeltaABC,if cos A+ sin A -(2)/(cos B ...

In `DeltaABC,if cos A+ sin A -(2)/(cos B + sin B) =0,` then `(a+b)/c` is equal to

A

`sqrt2`

B

1

C

`(1)/(sqrt2)`

D

`2sqrt2`

Text Solution

Verified by Experts

The correct Answer is:
A, B, C
Doubtnut Promotions Banner Mobile Dark
|

Similar Questions

Explore conceptually related problems

In a DeltaABC,3 sin A+4 cos B=6 and 3 cos A+4 sinB=1 , then angleC can be

Is (sin A )/( cos A) equal to tan A ?

In a triangle ABC, sin A- cos B = Cos C , then angle B is

If the equation cos 3 x cos^(3) x + sin 3 x sin^(3) x =0 , then x is equal to

Given that sin (A+ B) = sin A cos B + cos A sin B , find the value of sin 75° .

If in DeltaABC, angle A=90^(@) and c, sin B cos B are rational numbers, then show a and b are rational .

In a Delta ABC, c cos ^(2)""(A)/(2) + a cos ^(2) ""(C ) /(2)=(3b)/(2), then a,b,c are in

Using the fact that sin (A +B) = sin A.cos B+ cos A sin B and the differentiation, obtain the sum formula for cosines.

If sin A =cos B , then prove that A+B =90 ^(@)

IS (cos A)/( sin A) equal to cot A ?