Can anyone help me with this question!!
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6r6r9oi0
Step-by-step explanation:
sumit311271:
what??
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Step-by-step explanation:
cos A = 1/2 then A = 60 tan A = tan60 = √3
sin B =1/√2 then B = 45 tanB =tan45 =1
now [tanA -tan B ]/[1- tanAtanB ] = [√3-1]/[1 +√3]
=[√3-1]/[1 +√3] x[√3-1]/[√3-1]
=[√3-1]^2/[3-1]
=[3+1 -2√3]/2
=[4-2√3]/2 =2-√3
note
[tanA -tan B ]/[1- tanAtanB ]= tan[A-B]
=tan [60-45]
=tan 15 = 2-√3
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