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Maths Puzzle
Evaluate sin^2 30 degree + cos^2 45 degree - tan^2 60 degree.
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sin^2 30 degree + cos^2 45 degree - tan^2 60 degree
=1/4+1/2-3
=-2.25
10 years ago
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Book Other Question
If x-y = 7, find the value of (x^2+y^2).
Evaluate sec^2 30 degree + cot^2 45 degree - cosec^2 60 degree cos^2 30 degree.