Rewrite <math><mstyle displaystyle="true"><mi>tan</mi><mrow><mo>(</mo><mn>270</mn><mo>)</mo></mrow></mstyle></math> in terms of sines and cosines.

Apply the reference angle by finding the angle with equivalent trig values in the first quadrant. Make the expression negative because cosine is negative in the third quadrant.

The exact value of <math><mstyle displaystyle="true"><mi>cos</mi><mrow><mo>(</mo><mn>90</mn><mo>)</mo></mrow></mstyle></math> is <math><mstyle displaystyle="true"><mn>0</mn></mstyle></math> .

Multiply <math><mstyle displaystyle="true"><mo>-</mo><mn>1</mn></mstyle></math> by <math><mstyle displaystyle="true"><mn>0</mn></mstyle></math> .

The expression contains a division by <math><mstyle displaystyle="true"><mn>0</mn></mstyle></math> The expression is undefined.

Undefined

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Name | one billion eight hundred eighty-seven million twenty-nine thousand five hundred forty-nine |
---|

- 1887029549 has 8 divisors, whose sum is
**1969509120** - The reverse of 1887029549 is
**9459207881** - Previous prime number is
**9109**

- Is Prime? no
- Number parity odd
- Number length 10
- Sum of Digits 53
- Digital Root 8

Name | one hundred thirty-seven million five hundred twenty-four thousand nine hundred fifty-four |
---|

- 137524954 has 8 divisors, whose sum is
**235757088** - The reverse of 137524954 is
**459425731** - Previous prime number is
**7**

- Is Prime? no
- Number parity even
- Number length 9
- Sum of Digits 40
- Digital Root 4

Name | nine hundred seventy-eight million four hundred twelve thousand fifty-eight |
---|

- 978412058 has 16 divisors, whose sum is
**1584509640** - The reverse of 978412058 is
**850214879** - Previous prime number is
**397**

- Is Prime? no
- Number parity even
- Number length 9
- Sum of Digits 44
- Digital Root 8