Question

can anyone solve this....or tell me the process only how to solve this type of problems.....pls...​

Answer 1

$\frac{cos {30}^{0} }{sec {30}^{0} } + \frac{cosec {30}^{0} }{tan {45}^{0} } - \frac{2cos {0}^{0} }{sin {30}^{0} } + {cos}^{2} {45}^{0}$

$\implies\frac{ \sqrt{3} }{ \frac{2}{ \sqrt{3} } } + \frac{2}{1} - \frac{2 \times 1}{ \frac{1}{2} } + ( { \frac{1}{ \sqrt{2} } })^{2} \\ \implies \sqrt{3} \times \frac{ \sqrt{3} }{2} + \frac{2}{1} - 2 \times \frac{2}{1} + \frac{1}{2} \\ \implies \frac{3}{2 } + \frac{2 - 2}{1} - \frac{4}{1} + \frac{1}{2} \\ \implies \frac{3}{2} + \frac{0}{1} - \frac{8 + 1}{2} \\ \implies \frac{3 + 0}{2} - \frac{9}{2} \\ \implies \frac{3}{2} - \frac{9}{2} \\ \implies \frac{3 - 9}{2} \\ \implies \frac{ - 6}{2} \\ \implies - 3$

Thanku✌

Answer 2

Answer:

$\implies$ -3

$\large\underline\mathrm{Solution}$

$\implies$ cos30°/sec30 +cosec30°/tan45°-2cos0°/sin30°+cos²45°

$\implies$ √3/2/√3 + 2/1 - 2×1 / 1/2 + (1/√2)²

$\implies$ √3 ×√3/2 + 2/1 - 2 × 2/1 + 1/2

$\implies$ 3/2 + (2-2) / 1 - 4/1 + 1/2

$\implies$ 3/2 + 0/1 - (8 + 1) /2

$\implies$ (3 + 0)/2 - 9/2

$\implies$ 3/2 - 9/2

$\implies$ (3 - 9)/2

$\implies$ -6/2

$\implies$ -3