Sin35. sin55 - cos35 .cos55 + tan 2 45 evaluate
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sin35°×sin55° — cos35°×cos55° + tan²45°
= —cos(35° + 55°) + tan²45°
= —cos90° + tan²45°
= 0+1²
= 1
= —cos(35° + 55°) + tan²45°
= —cos90° + tan²45°
= 0+1²
= 1
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