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CBSE Class 11-science Answered

Simplify:
cos{A+(n-3/2)B}-cos{A+(n+3/2)B
Asked by Anil | 06 Jun, 2017, 06:04: PM
answered-by-expert Expert Answer
begin mathsize 16px style cos open curly brackets straight A plus open parentheses fraction numerator straight n minus 3 over denominator 2 end fraction close parentheses straight B close curly brackets minus cos open curly brackets straight A plus open parentheses fraction numerator straight n plus 3 over denominator 2 end fraction close parentheses straight B close curly brackets equals negative 2 sin open parentheses fraction numerator straight A plus open parentheses fraction numerator straight n minus 3 over denominator 2 end fraction close parentheses straight B plus straight A plus open parentheses fraction numerator straight n plus 3 over denominator 2 end fraction close parentheses straight B over denominator 2 end fraction close parentheses sin open parentheses fraction numerator straight A plus open parentheses fraction numerator straight n minus 3 over denominator 2 end fraction close parentheses straight B minus straight A plus open parentheses fraction numerator straight n plus 3 over denominator 2 end fraction close parentheses straight B over denominator 2 end fraction close parentheses equals negative 2 sin open parentheses straight A plus nB over 2 close parentheses sin open parentheses nB over 2 close parentheses end style
Answered by Sneha shidid | 07 Jun, 2017, 09:00: AM

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CBSE 11-science - Maths
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