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ravi tyagi Grade: 12
        cos(thita)[sin(thita)+root sin(square)((thita)+sin(square)(alpha)]


always lies between the values (plus minus)root 1+sin(square)alpha
6 years ago

Answers : (1)

Badiuddin askIITians.ismu Expert
147 Points
										

Dear ravi


cosθ[sinθ + √{sin2θ +sin2α}]


[cosθ]sinθ + cosθ [√{sin2θ +sin2α}]


 


we know that     asinθ + bcosθ   lies between    - √{a2 +b2}  to  √{a2 +b2}


so  given expression lies between   -√{cos2θ + sin2θ +sin2α}  to √{cos2θ + sin2θ +sin2α}


   or                                           -  √{1 +sin2α}   to    √{1 +sin2α}


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6 years ago
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