Question

sin30/sin45+tan45/sec60-sin60/cot45-cos30/sin90

Answer 1

Hope u like my process
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$\frac{ \sin(30) }{ \sin(45) } + \frac{ \tan(45) }{ \sec(60) } - \frac{ \sin(60) }{ \cot(45) } - \frac{ \cos(30) }{ \sin(90) } \\ = \frac{ \frac{1}{2} }{ \frac{1}{ \sqrt{2} } } + \frac{1}{2} - \frac{ \frac{ \sqrt{3} }{2} }{1} - \frac{ \frac{ \sqrt{3} }{2} }{1} \\ = \frac{ \sqrt{2} }{2} + \frac{1}{2} - 2 \times \frac{ \sqrt{3} }{2} \\ = \frac{ \sqrt{2} + 1 - 2 \sqrt{3} }{2}$
Hope this is ur required answer

Proud to help you

Answer 2

(1/2)/(1/√2)+1/(1/2)-(√3/2)/(1) -(√3/2)/(1)
=1/√2+2-√3