If `A=B=60^@` , verify that (i) `cos(A-B)=cosAcosB+sinAsinB` (ii) `sin(A-B)=sinAcosB-cosAsinB` (iii) `tan(A-B)=(tanA-tanB)/(1+tanAtanB)`

If A=B=60o, verify that cos(A-B)=cos A cos B+sin A sin B(iii)sin(A-B)=sin A cos B-cos A sin B(iii)tan(A-B)=(tan A-tan B)/(1+tan A tan B)

prove that cos(A+B)=cosAcosB-sinAsinB

If A=60^(@) and B=30^(@) , verify that : (i)sin(A-B)=sinAcosB-cosAsinB (ii) cos(A-B)=cosAcosB+sinAsinB (iii) tan(A-B)=(tanA-tanB)/(1+tanAtanB)

If A=30^@ and B=60^@ , verify that (i) sin(A+B)=sinAcosB+cosAsinB (ii) cos(A+B)=cosAcosB-sinAsinB

If A=30^@ and B=60^@ ,show that (ii)cos(A+B)=cosAcosB-sinAsinB

If A=60⁰ and B=30⁰ , verify that cos (A-B)=cos A cos B+sin A sin B

If A=60⁰ and B=30⁰ , verify that cos(A+B)=cos A cos B-sin A sin B

If A=60^(@) and B=30^(@) , verify that : (i)sin(A+B)=sinAcosB+cosAsinB (ii) cos(A+B)=cosAcosB-sinAsinB

If A=60^(@),B==30^(@) then verify that cos(A+B)=cos A*cos B-sin A*sin B

Prove by vector method that sin(A-B)=sinAcosB-cosAsinB and sin(A+B)=sinAcosB+cosAsinB