How is it that sin90 is negative?

how do i do this? 64 negative cubed divided by 4 to the negative fifth. the answer is 1/256.

Cos180* - Sin90* + Cot45* - Csc30* - Sec240* - Tan315* How do I do this?

1/tan60';sin90',tan60';...form a sequence. Calculate the fourth term.

Is it possible to get a negative percent as an answer to a problem

I need help on zero and negative exponents

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What is the name of the negative particle that circles the nucleus of the atom?

What is an example of a negative monetary incentive?(1 point) Responses purchasing a "buy get one fr...

What is sin90° ? Provide the exact answer.(1 point) sin90°=

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