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\left. \begin{array} { l } { 2 \operatorname { tan } ^ { 2 } 45 ^ { \circ } + \operatorname { cos } ^ { 2 } 30 ^ { \circ } - \operatorname { sin } ^ { 2 } 60 ^ { \circ } } \\ { \frac { \operatorname { sin } 30 ^ { \circ } + \operatorname { tan } 45 ^ { \circ } - \operatorname { cosec } 60 ^ { \circ } } { \operatorname { sec } 30 ^ { \circ } + \operatorname { cos } 60 ^ { \circ } + \operatorname { cot } 45 ^ { \circ } } } \end{array} \right. |
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Answer» 1) 2(1)^2+(root(3)/2)^2-(root(3)/2)^2=2+3/4-3/4=22)(1/2+1-2/root(3))/(2/root(3)+1/2+1)=(root(3)+2root(3)-4)/(4+root(3)+2root(3))=(3root(3)-4)/(3root(3)+4)=(3root(3)-4)^2/(27-16)=(27+16-24root(3))/11=(43-24root(3))/11 |
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