निम्न में x का मान ज्ञात कीजिए:
3 tan 2x = sin 30° + sin 45° cos 45° + 2sin 90°
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Solution
3 tan 2x =sin30°+sin 45°cos 45°+2 sin 90°
=>3 tan 2x =0.5+(1√2)(1/√2)+2(1)
=>3 tan 2x =0.5+0.5+2
=>3tan 2x=3
=>tan 2x=1
=>tan 2x=tan 45° [as,tan 45°=1]
=2x=45°
=>X=22.5°
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3tan2x=1/2+1/√2×1/√2+2×1
3tan2x=1/2+1/2+2
3tan2x=1+1/2+2
3tan2x=2/2+2
3tan2x=1+2
3tan2x=3
tan2x=3/3
tan2x=1
tan2x=tan45
2x=45
x=45/2
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