Cos square 17 - sin square 73 is equal to zero prove it
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Answered by
34
Hii friend,
Cos²17 - Sin²73 = 0
LHS = Cos²17 - Sin²73
=>Cos²17 - Sin²73
=>Cos²17 - Sin²(90-17).
=>Cos²17 - Cos²17 [ Sin(90-theta) = Cos theta]
=> 0
Hence,
LHS = RHS = 0
HOPE IT WILL HELP YOU...... :-)
Cos²17 - Sin²73 = 0
LHS = Cos²17 - Sin²73
=>Cos²17 - Sin²73
=>Cos²17 - Sin²(90-17).
=>Cos²17 - Cos²17 [ Sin(90-theta) = Cos theta]
=> 0
Hence,
LHS = RHS = 0
HOPE IT WILL HELP YOU...... :-)
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