Solve - sin90°-2cos45°. Sin45°
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Sin90=1
Cos 45= 1/√2
Sin 45= 1/√2
Therefore,
=1-2×1/√2×1/√2
=1-2/2
=1-1
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Cos 45= 1/√2
Sin 45= 1/√2
Therefore,
=1-2×1/√2×1/√2
=1-2/2
=1-1
0
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