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CBSE Class 11-science Answered

(cos x - cos y)^2 + (sin x - sin y)^2 = 4sin^2 (x-y)/2
Asked by rtortechger.official | 12 Jul, 2018, 19:36: PM
answered-by-expert Expert Answer
begin mathsize 16px style open parentheses cos space straight x space minus space cos space straight y close parentheses squared plus open parentheses sin space straight x space minus space sin space straight y close parentheses squared equals cos squared straight x plus sin squared straight x plus cos squared straight y plus sin squared straight y minus 2 open square brackets cosx space cosy space plus sinx space siny close square brackets equals 2 minus 2 open parentheses cos open parentheses straight x minus straight y close parentheses close parentheses equals 2 open square brackets 1 minus open curly brackets 1 minus 2 sin squared open parentheses fraction numerator straight x minus straight y over denominator 2 end fraction close parentheses close curly brackets close square brackets equals 4 sin squared open parentheses fraction numerator straight x minus straight y over denominator 2 end fraction close parentheses end style
Answered by Arun | 13 Jul, 2018, 11:29: AM

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CBSE 11-science - Maths
if log 1/2 x greater than log 1/2 y then x greater than y
Asked by megaladevi07 | 24 Jul, 2024, 11:01: AM
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CBSE 11-science - Maths
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CBSE 11-science - Maths
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CBSE 11-science - Maths
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CBSE 11-science - Maths
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CBSE 11-science - Maths
ax^2+bx+c=0 then x=
Asked by manjushakothavade1979 | 25 Jun, 2024, 10:29: AM
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CBSE 11-science - Maths
prove using identities cos4xsin3x-cos2xsinx/sin4xsinx+cos6xcosx =tanx
Asked by ishanvi.pahil | 22 Jun, 2024, 22:31: PM
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CBSE 11-science - Maths
answer
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Asked by jagathaiah.kamsali | 13 Jun, 2024, 20:20: PM
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CBSE 11-science - Maths
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CBSE 11-science - Maths
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