poojithanemala
poojithanemala poojithanemala
  • 25-12-2020
  • Mathematics
contestada

If X=sin130° + cos130° then 1)X <0 2)X=0 3)X>0 4) X> or equal to 0​

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ChoiSungHyun
ChoiSungHyun ChoiSungHyun
  • 25-12-2020

Step-by-step explanation:

X = sin130° + cos130°

= sin50° - cos50°

= sin50° - sin40°.

sin50° is definitely greater than sin40°, therefore X > 0. (3)

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