Consider 
+ sin2 63° + cos 63°sin 27°
= 
+ sin2 63° + cos 63° sin (90° – 63°)
= 
+ sin2 63° + cos 63° cos 63°
= (1/1) + (sin2 63° + cos2 63°)
= 1 + 1
= 2
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Couldn't generate an explanation.
Generated by AI. May contain inaccuracies — always verify with your textbook.
