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OpenStudy (anonymous):
the equation sin(pi/6 -x) is equal to______? a. 1/2 (sqrt3 cosx-sinx) b. 1/2 (sqrt3 cos x+sin x) c. 1/2 (cos x- sqrt3 sinx) d. 1/2 (cosx+sqrt3 sinx)
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OpenStudy (anonymous):
sin(A_B)=sinAcosB -cosAsinB
OpenStudy (anonymous):
so... sin30= 1/2. and cos30= root3/2. justsub the values and solve it :)
OpenStudy (anonymous):
@blueocean18 did you get it?
OpenStudy (anonymous):
yes thanks!
OpenStudy (anonymous):
:)
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