Question

Evaluate:
$\frac{ \tan(45) }{ \csc(45) } + \frac{ \sec(60) }{ \cot(45 ) } - \frac{5 \sin(90) }{2 \cos(0) }$

Answer 1

putting the value of the t ratios,
1/√2+2/1-5×1/2×1
= (2+4√2-5√2)/2√2
= (2-√2)/2√2
= {√2(√2-1)}/2√2
= (√2-1)/2