Find the value of: 3sin^2 20° – 2tan^2 45° + 3sin^2 70°

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asked Mar 14, 2018 in Mathematics by shabnam praween (19,050 points) 5 6 77

Find the value of: 3sin2 20° – 2tan2 45° + 3sin2 70°

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answered Mar 14, 2018 by mdsamim (213,225 points) 5 10 23
selected Mar 15, 2018 by faiz
 
Best answer

The correct answer is

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