q6 please help me please
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I know the answer but in english is that ok
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Heya
______________________________
B + C + A = 180° { Sum of all angles in a Trangle is 180}
And
Sin ( 90 - A ) = Cos ( A )
L.H.S
Sin ( B + C )/2
=>
Sin ( 180 - A )/2
=>
Sin ( 90 -A/2 )
= Cos (A/2)
______________________________
B + C + A = 180° { Sum of all angles in a Trangle is 180}
And
Sin ( 90 - A ) = Cos ( A )
L.H.S
Sin ( B + C )/2
=>
Sin ( 180 - A )/2
=>
Sin ( 90 -A/2 )
= Cos (A/2)
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