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# maths question how do i work it out???? question 2.) cos30 watch

1. ??? I need help
2. assuming the question is in the title all you gotta do is get a calculator whack on the cos symbol whack the numbers in and whack equals. Job done. Remember to use a scientific calculator.

3. Where x is the number you want to find the cosine of and ! is factorial. For example, 5!, “five factorial”, equals 1 times 2 times 3 times 4 times 5, which is 120, and so, 6! = 720

Simply sub 30 into the x position and off you go. Should be fine in your head
4. Or use a calculator
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5. How would i do that? Cos30 graph so is it cos(0)x30 cos(90)x30 ?????? Idk how to draw it the graph
6. (Original post by Tubbz)

Where x is the number you want to find the cosine of and ! is factorial. For example, 5!, “five factorial”, equals 1 times 2 times 3 times 4 times 5, which is 120, and so, 6! = 720

Simply sub 30 into the x position and off you go. Should be fine in your head
I’m pretty sure the OP is wanting an exact surd term as opposed to a decimal approximation.

Actually just reread your post and I’m guessing you are joking.
7. (Original post by notnek)
i’m pretty sure the op is wanting an exact surd term as opposed to a decimal approximation.

Actually just reread your post and i’m guessing you are joking.

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