Question

cot^2 135°- sin 30° + 4 tan 45°

(1)^2 - 1/2 + 4(1)

Answer 1

@jim_thompson5910

Answer 2

The only issue I have is cot(135) is NOT equal to +1

it's actually equal to -1

Answer 3

but it won't matter because (-1)^2 = (1)^2 = 1

Answer 4

it's still a good idea to evaluate each trig expression correctly

Answer 5

Ok Ill ask my teacher about cot 135 because she gave me the notes.. but still how does everything equal to 1?

Answer 6

cot(135) = 1/tan(135)

cot(135) = 1/(-1)

cot(135) = -1

Answer 7

evaluate (-1)^2 - 1/2 + 4(1) to get ???

Answer 8

it gives me 4 1/2

Answer 9

I'm getting 4.5 which is equivalent to \(\Large 4 \frac{1}{2}\)

Answer 10

so you are correct

Answer 11

Ok thanks ;) @jim_thompson5910