Question

5sin п/4 +3 tg п/4-5 cos п/4 -10 ctg п/4

Answer 1

$5sin frac{ pi }{4} +3tg frac{ pi }{4} -5cos frac{ pi }{4} -10ctg frac{ pi }{4} = 5* frac{ sqrt{2} }{2} +3*1-5* frac{ sqrt{2} }{2} -10*1=\3-10=-7$