Join now for JEE/NEET and also prepare for Boards Join now for JEE/NEET and also prepare for Boards. Register Now
Hey there! We receieved your request
Stay Tuned as we are going to contact you within 1 Hour
One of our academic counsellors will contact you within 1 working day.
Click to Chat
1800-1023-196
+91-120-4616500
CART 0
Use Coupon: CART20 and get 20% off on all online Study Material
Welcome User
OR
LOGIN
Complete Your Registration (Step 2 of 2 )
Sit and relax as our customer representative will contact you within 1 business day
If tan B = mSinACosA/ 1-mSin^2A , prove that tan(A-B)=(1-m)tanA If tan B = mSinACosA/ 1-mSin^2A , prove that tan(A-B)=(1-m)tanA
ANALYSE THE QUESTION: tan B = mSinACosA/ 1-mSin^2A we have to find tan(A-B) which is equal to(tanA – tanB )/(1+tanAtanB) ------------(1)IN THIS QUESTION, JUST PUT THE VALUE OF tanB in upper equation (1)after solving, you will get [tanA(1-msin2A) – msinAcosA ] / [1- msin2A + tanAmsinAcosA ]JUST LOOK AT THE DENOMINATOR, IT IS BECOMING 1 (write tanA = sinA/cosA AND msin2A term will be cancelled )NOW YOU ARE LEFT WITH NUMERATOR, mutiply and divide msinAcosA by cosA AND take tanA common.tanA [1-m(sin2A + cos2A )tanA [ 1-m(1) ]
Dear , Preparing for entrance exams? Register yourself for the free demo class from askiitians.
points won -