<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
Answer:
Step-by-step explanation:
Q3.
If ΔGHI and ΔJKL are similar, then the sides are in proportion:
We have
JL = x, GI = 9 ft, LK = 24 ft, IH = 12 ft.
Substitute:
<em> multiply both sides by 2</em>
Q4.
We must multiply the original length by a scale factor of 3/4:
Answer:correct
Step-by-step explanation:
Apple pie- $4
lemon pie- $14
Answer:
1100 dirham
Step-by-step explanation:
If one book is 55 dirham, then you multiply that by 20 to get the total cost.
(If you are supposed to go from dirham to something else, then I'm sorry I don't know)
Hope this helps!
