<span>sin (a - b) = sinacosb - sinbcosa
1) sin345° = sin (360 - 15) = sin360cos15 - sin15cos360= 0-sin15 *1=
</span>sin345° = - sin15,
2) cos(11π) /12= - cos pi / 12 = cos ( - 4pi/12 +3pi/12)= cos (- pi/3 + pi/4) =
cos (-pi/3) cos pi/4) + sin (-pi/3) sin( pi/4) = sqrt6 /4 - sqrt2/ 4
Point B . 1 Mark to the right of negative 1
Step-by-step explanation:
The given number line starts from negative 2 to positive 1 in increments of 1.
Hence the four main divisions represent negative 2, negative 1 0 and positive 1
Also there are 4 equal spaces between each number. Hence each sub division between each number represents a quarter.
Point A is 1 mark to the right of negative 2. This would represent the number negative one and three quarter.
Point B is 1 mark to the right of negative 1. This would represent the number negative three quarter.
Point C is 1 mark to the left of 0. This would represent the number negative one quarter.
Point D is 1 mark to the left of 1. This would represent the number positive three quarter.
Point B representing 1 mark to the right of negative 1 is the answer as it is equal to negative three quarter.
Answer:
5 gallons is 1/10 of 50 gallons; this is 10%
30 gallons is 30/50 or 60%
45 gallons is 45/50 or 90%
100 gallons is 200%
Step-by-step explanation:
The watre is 16 inches deep so and you can use our volume calculator to calculate the amount of water in the basement.
A: 40 ft by 28 ft by 16 inches gives 11171 U.S. gallons
B: 16 ft by 22 ft by 16 inches gives 3510.9 U.S. gallons
For a total of 14681.9 gallons. At 50 gallons per minute it will take 294 minutes which is about 5 hours and hence with 2 pumps about 2.5 hours.
I hope this helps,
Answer:
The answer to the question is B
