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CBSE Class 11-science Answered

REDUCE TO SINE OR COSINE OF A SINGLE EXPRESSION 
  COS A - SIN A
Asked by dalbirgolagarh | 16 Aug, 2016, 10:27: PM
answered-by-expert Expert Answer
begin mathsize 24px style Using space the space formula space that colon acosx plus bsinx space equals space Rcos left parenthesis straight x space minus space straight p right parenthesis where space straight p space equals arctan left parenthesis straight b over straight a right parenthesis and space straight R space equals space square root of straight a squared plus straight b squared end root The space given space question space has space straight a equals space 1 space space and space straight b equals space minus 1 Hence space straight p space equals arctan left parenthesis fraction numerator negative 1 over denominator 1 end fraction right parenthesis space equals space arctan left parenthesis negative 1 right parenthesis space equals negative 45 to the power of straight o and space straight R equals square root of left parenthesis 1 right parenthesis squared plus space left parenthesis negative 1 right parenthesis squared end root space space equals square root of 1 plus 1 end root space equals square root of 2 cos space straight A minus space sin space straight A space equals space square root of 2 cos left parenthesis straight A minus left parenthesis negative 45 to the power of straight o right parenthesis right parenthesis space equals space square root of 2 cos left parenthesis straight A plus 45 to the power of straight o right parenthesis end style
Answered by Tripti Agrawal | 17 Aug, 2016, 11:17: AM

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CBSE 11-science - Maths
Please solve the question 
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Asked by vikasg13.hardware | 22 Jun, 2018, 09:47: PM
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CBSE 11-science - Maths
If y = 2/( sinA + √3 cosA ) , then find the minimum value of y using differential calculus
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CBSE 11-science - Maths
Draw the graph of y = sinx,
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CBSE 11-science - Maths
Draw the graph of y =
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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Draw the graph of y = cosx
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Draw the graph of y = tanx
Asked by Topperlearning User | 31 May, 2016, 11:05: AM
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CBSE 11-science - Maths
If  sinx = , x lies in the II quadrant, find the value of cosx
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 11-science - Maths
Sinx =  and secx =, find the value of cotx.
Asked by Topperlearning User | 04 Jun, 2014, 01:23: PM
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CBSE 11-science - Maths
If x lies in  III quadrant and tanx = , find the values of other trigonometric functions
Asked by Topperlearning User | 31 May, 2016, 10:27: AM
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