tan 3x = sin 45 * cos 45 +sin 30
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we know that
sin45=1/ √2
cos45=1/√2
sin30=1/2
tan3x = 1/√2*1/√2+1/2
tan3x=1/2+1/2
tan3x=1
tan3x=tan45°
3x=45
x=15°
sin45=1/ √2
cos45=1/√2
sin30=1/2
tan3x = 1/√2*1/√2+1/2
tan3x=1/2+1/2
tan3x=1
tan3x=tan45°
3x=45
x=15°
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