What is the answer to this trigonometry problem?

0 ⤊

sin (π/2) - sin (5π/12)

it's in radians

these are the answer choices, but i don't think any of them work :

a) -√2/2
b) √2/2
c) 0
d) 1

2007-06-15 05:03:31 · 3 answers · asked by Andrew F 2 in Science & Mathematics ➔ Mathematics

yes they are all wrong
it's sin 90 - sin 75
=1-0.9656
=0.03407

may be it's sin(pi/2)-sin(5pi/2)?
it will equals to 0

2007-06-15 05:09:24 · answer #1 · answered by Anonymous · 0⤊ 0⤋

sin A - sin B = 2 [cos (A + B) / 2] .[sin (A - B) / 2 ]
sin(Ï/2) - sin(5Ï/2) = 2.cos 3Ï/2.sin (-2Ï)
sin(Ï/2) - sin(5Ï/2) = 2 x 0 x 0 = 0
ANSWER c)

2007-06-15 20:32:12 · answer #2 · answered by Como 7 · 0⤊ 0⤋

its value is 0.03407, which is approximately equal to 0, so the answer is - choice c

2007-06-15 05:22:50 · answer #3 · answered by ponky 1 · 0⤊ 0⤋