Question

please slove the solution​

Answer 1

Step-by-step explanation:

If cos A=1/2 then,

A=60° [cosA=cos60°]

similarly B= 45°

tanA- tanB/1+tanA tanB

By putting the value of A and B then,

tan 60°- tan45°/1+tan60°*tan 45°

√3-1/1+√3×1

√3-1/1+√3

√3-1×1-√3/1+√3×1-√3 [ multiplying both by

√3-3-1+√3/(1-√3 )² 1-√3] 2√3-4/1+3-2√3

2(√3-2)/4-2√3

2(√3-2)/2(2-√3)

√3-2/2-√3

-(√3-2)/√3-2)

= -1

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