cos pie- 4sin pie/6+cot pie/4?

Answer 1

cos(pi) = -1

sin(pi/6) = 0.5 - same as sin 30 degrees

cot(pi/4) = 1 - same as cot 45 degrees

So,
cos(pi) - 4sin(pi/6) + cot(pi/4) = -1 - 4(0.5) + 1
= -2

Answer 2

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