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Neko [114]
2 years ago
10

Sin10°-cos10° product and evaluate​

Mathematics
2 answers:
Elena-2011 [213]2 years ago
8 0

\\ \sf\longmapsto sin10°-cos10°

\\ \sf\longmapsto sin(90-10°)-cos10°

  • sin(90-A)=cosA

\\ \sf\longmapsto cos10-cos10

\\ \sf\longmapsto 0

Montano1993 [528]2 years ago
6 0

Question should be sin 20 cos 10 + cos 20 sin 10

remember sin (a+b) = sin a cos b + cos a sin b ?

sin 20 cos 10 + cos 20 sin 10

= sin (20+10)

= sin 30

= 1/2

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