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CBSE Class 11-science Answered

Pls sol ve
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Asked by pb_ckt | 11 Jun, 2019, 03:35: PM
answered-by-expert Expert Answer
begin mathsize 16px style fraction numerator cos 4 straight x plus cos 3 straight x plus cos 2 straight x over denominator sin 4 straight x plus sin 3 straight x plus sin 2 straight x end fraction end style
begin mathsize 16px style equals fraction numerator cos 4 straight x plus cos 2 straight x plus cos 3 straight x over denominator sin 4 straight x plus sin 2 straight x plus sin 3 straight x end fraction end style
begin mathsize 16px style equals fraction numerator 2 cos 3 xcosx plus cos 3 straight x over denominator 2 sin 3 xcosx plus sin 3 straight x end fraction end style
begin mathsize 16px style equals fraction numerator 2 cos 3 straight x open parentheses cos 3 straight x plus 1 close parentheses over denominator 2 sin 3 straight x open parentheses cos 3 straight x plus 1 close parentheses end fraction end style
= cot3x
Answered by Sneha shidid | 11 Jun, 2019, 04:18: PM

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CBSE 11-science - Maths
Sin(x)/√2+cos(x)/√2=√3/2
Asked by 069.pks | 16 Sep, 2023, 10:06: AM
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CBSE 11-science - Maths
Please solve 41 st question
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Asked by sinchanaandavan | 02 Jan, 2022, 12:17: PM
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CBSE 11-science - Maths
if tan(pie/4+teta)+tan(pie/4-teta)=3
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Asked by Madhavipamarthi1977 | 16 Sep, 2020, 08:18: PM
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CBSE 11-science - Maths
A+B=360° tanA+tanB/1-tanA tanB
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Asked by ManjuShaharraiya | 15 Sep, 2020, 09:57: PM
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CBSE 11-science - Maths
pls clear the doubt, dear sir/ madam
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Asked by sachitshanchinal | 02 Sep, 2020, 02:53: PM
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CBSE 11-science - Maths
If A+B+C=π then prove that  Cos^A+Cos^B+Cos^C=1-2CosA.CosB.CosC
Asked by vikassuradkar2015 | 08 Dec, 2019, 11:11: PM
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CBSE 11-science - Maths
.
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Asked by Krishna62 | 07 Sep, 2019, 06:50: PM
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CBSE 11-science - Maths
plzz explain how to solve it with the solution
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Asked by ABHILASHA | 07 Sep, 2019, 03:14: PM
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CBSE 11-science - Maths
Pls answer the attached questions ASAP
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Asked by hunte2931 | 17 Jun, 2019, 04:49: PM
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CBSE 11-science - Maths
Pls solve it.
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Asked by pb_ckt | 12 Jun, 2019, 02:36: PM
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