nosiphocharmaine494 nosiphocharmaine494
  • 06-04-2021
  • Mathematics
contestada

cos80°.cos10°-sin80°.sin10°​

Respuesta :

btsforever1234567boy
btsforever1234567boy btsforever1234567boy
  • 06-04-2021

Step-by-step explanation:

The answer will be zero

here are the steps:

cos(90-10)xcos(90-80)-sin(90-10)xsin(90-10)=

(cos10xcos10)-(sin80xsin80)=

0.965111-0.965111=0

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