Question

sin(37.5)sin(7.5)

(1/2)cos(30)-cos(45)

then what?

Answer 1

i dont quite understand ur answers dont match up

Answer 2

sin(37.5)sin(7.5)=(1/2)cos(30)-cos(45)
im using the product to sum identity (1/2)[cos(x-y)-cos(x+y)]

Answer 3

i c, so u want it simplified?

Answer 4

\[(1/2) [(\sqrt{3}/2)-(\sqrt{2}/2)]\]

Answer 5

yes please

Answer 6

hint: use the identity I've attached

Answer 7

im using this identity tho

Answer 8

the answer is
(sqrt(3)-sqrt(2))/4

Answer 9

oh ok that will work too

Answer 10

remember what cos 30 is equivalent to and cos 45?

Answer 11

lol looking up u already did it

Answer 12

why'd u ask if u knew?

Answer 13

cos(30)=\[\sqrt{3}/2\]
cos(45)=\[\sqrt{2}/2\]

Answer 14

i just didnt know how to simplify it thanks tho

Answer 15

take out 1/2 out of both of them
np