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“यश eo0€ Uk |
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Answer» tan 30 = 1/√3then2tan30/(1+tan^2 30) is=2×1/√3/(1+(1/√3)²)=2/√3/(1+1/3) in brackets by taking 3 as lcm we get=2/√3/ (3+1/3)=2/√3 / 4/3=2/√3×3/4=3/2√3 (3 can be written as√3×√3)=√3×√3 / 2√3=√3/2= cos 30 sorry but the option is (a)sin60° (b)cos60° (c)tan60° (d)sin30° |
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