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Without using tables, evaluate, (sin^2 20º+sin^2 70º)/(cos^2 20º+cos^2 70º)+[(sin(90º-θ).sinθ)/tanθ+(cos(90º-θ).cosθ)/cotθ].

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+1 vote
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asked Feb 5, 2018 in Mathematics by Kundan kumar (49,132 points) ● 34 ● 435 ● 1342

Without using tables, evaluate,

(sin2 20º+sin2 70º)/(cos2 20º+cos2 70º)+[(sin(90º-θ).sinθ)/tanθ+(cos(90º-θ).cosθ)/cotθ].

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answered Feb 5, 2018 by Vikash Kumar (144,729 points) ● 8 ● 11 ● 25
 
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Solution is.....

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