Question

Blvalute stan 30*Sin30°+ COSE Sin? 90'tan?60° - 2 tan45' cos?oºsing 2 1f kry = Sec? o Cit sino) Ct sino), find the value of K.

11th - 12th Class

Maths

Solution

178

4.0 (1 ratings)

( =tan ^{2} 30^{circ} sin 30^{circ}+cos 60^{circ} sin ^{2} 90^{circ} tan ^{2} 60^{circ}-2 operatorname{con} 45^{circ} cos ^{2} 0^{prime} sin 90^{circ} ) ( =left(left(frac{1}{sqrt{3}}right)^{2} times frac{1}{2}right)+left(frac{1}{2} times 1^{2} times sqrt{3}right)-left(2 timesleft(times 1^{2} times 1right)right. ) ( left.=frac{1}{6} frac{1}{6}right) ) ( =frac{1}{6} ) ( =frac{1+3 sqrt{3}-12}{6} )