# Determine if True -cos(50)=sin(40)

Determine if True -cos(50)=sin(40)
The left side does not equal to the right side , which means that the given statement is false.
False
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### Name

Name eight hundred twenty-eight million seven hundred twenty-one thousand seventy-four

### Interesting facts

• 828721074 has 16 divisors, whose sum is 1664877312
• The reverse of 828721074 is 470127828
• Previous prime number is 223

### Basic properties

• Is Prime? no
• Number parity even
• Number length 9
• Sum of Digits 39
• Digital Root 3

### Name

Name one billion eight hundred fourteen million one hundred seventy-one thousand one hundred sixty-six

### Interesting facts

• 1814171166 has 16 divisors, whose sum is 4837789824
• The reverse of 1814171166 is 6611714181
• Previous prime number is 3

### Basic properties

• Is Prime? no
• Number parity even
• Number length 10
• Sum of Digits 36
• Digital Root 9

### Name

Name one billion three hundred twenty million six hundred sixty thousand six hundred fifty

### Interesting facts

• 1320660650 has 16 divisors, whose sum is 2061051720
• The reverse of 1320660650 is 0560660231
• Previous prime number is 6397

### Basic properties

• Is Prime? no
• Number parity even
• Number length 10
• Sum of Digits 29
• Digital Root 2