Math, asked by raghavarpit381, 2 months ago

(viii) sin 42° sin 48° - cos 42° cos 48°

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Answered by Anonymous

1

sin 42° sin 48° - cos 42° cos 48°

sin(90° - 48°)sin 48° - cos(90° - 48°) cos 48°

= cos 48° sin 48° - sin 48°cos 48° = cos 48° sin 48° - cos 48° sin 48°

= 0

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