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Why cos(sinx)>0 ???? Please if you can answer me coz it is necessary

Why  cos(sinx)>0 ???? Please  if you can answer  me coz it is  necessary 

Grade:10

1 Answers

Harshit Singh
askIITians Faculty 5963 Points
3 years ago
Dear Student

Value of sin x ranges from –1 to 1
so value of cos(sinx) will range from cos(-1 ) to cos(1)

1 is in radians that will be nearly 57 degrees.

Now look at the graph of cos(t)
from –90 degrees to 90 degreees, it is positive

Socos(sinx)>0

Thanks

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