sin(45°+theta)-cos(45°- theta)=___
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Step-by-step explanation:
sin(45°+x)-cos(45°-x)
=(sin45°cosx + cos45°sinx) - (cos45°cosx+sin45°sinx)
=(cosx/2½+sinx/2½)-(cosx/2½+sinx/2½)
=cosx/2½ + sinx/2½ - cosx/2½ - sinx/2½
= 0
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