Which trigonometric expression has a negative? value? pls !

B. sin(5pi/4)= -(sqr2/2)

Step-by-step explanation:

B. sin(5pi/4)= -(sqr2/2)

Step-by-step explanation:

This is because its in the 3rd quadrant, meaning the coordinates will be ( - , - ).

Also if you want to think of it like this,

since pi/1 is equal to 180 degrees on the Unit Circle, you can consider 4 as 180 degrees, like this, 180/4=45, from this we can tell that "1" is equal to 45 degrees on the unit circle in this case. From this can we derive that 5 is 225 degrees around the Unit Circle, thus landing in the 3rd Quadrant.

*Use the attachment for reference.

i think there was a typo. you wrote pat brings 3 quarts of ice-cream to the party. each serving of ice-cream is 1 6 quart. how many total servings of ice-cream does pat bring to the party? i think the bold is supposed to be 1/6. so 1 quart of ice cream = 6 servings. 6 * 3 = 18.