English, asked by chandgehlot123, 10 months ago

Find the value of sin 70 degree sin 20 degree - cos 20 degree cos 70 degree
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Answers

Answered by meenakumarihans
1

sin(70 degrees) is between sqrt(3)/2 and 1 because sin(60 degrees)=sqrt(3)/2. Sqrt (3) is approximately 1.73. So, sqrt (3)/2 is approximately 0.865. Note that sin(90 deg) = 1.
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