Home
Class 11
MATHS
In a DeltaABC sum((cotA+cotB)/(tanA+tan...

In a `DeltaABC` `sum((cotA+cotB)/(tanA+tanB))` is equal to

A

1

B

2

C

`-1`

D

`-2`

Text Solution

Verified by Experts

The correct Answer is:
A
Promotional Banner

Similar Questions

Explore conceptually related problems

If tanA=(1-cosB)/sinB , then tan2A is equal to

angle ACD is the exterior angle of DeltaABC. The measures of angle A and angleB are equal. If mangleACD=140^@ , find the measures of angleA and angleB

Select the correct option from the given alternatives. (frac(tanA)(1+secA))+(frac(1+secA)(tanA)) is equal to…..

If DeltaABC~DeltaPQR with (BC)/(QR)=1/3 ,then (ar(DeltaPRQ))/(ar(DeltaBCA)) is equal to

In triangle ABC , if cotA, cotB, cotC are in A.P. then show that a^2,b^2,c^2 are also in A.P

In any DeltaABC,("tan"(A)/(2)-"tan"(B)/(2))/("tan"(A)/(2)+"tan"(B)/(2)) is equal to

At any point on a curve , the slope of the tangent is equal to the sum of abscissa and the product of ordinate and abscissa of that point.If the curve passes through (0,1), then the equation of the curve is

IF tanA+cotA=5, then tan^4 A+cot^4 A is equal

In a triangle ABC , if b^2 + c^2 = 3a^2 , then cotB + cotC-cotA is equal to