Question

evaluate 2 sin 30+4 cos 60+5 cos 45-8 cot 45

Answer 1

2(1/2)+4(1/2)+5(1/√2)-8(1)

1+2+5/√2-8

5√2-5

( sin 30 is 1 /2 , cos 60 is 1/2 ,cos 45 is 1/√2,cot 45 is 1)