Answer:
The sine and cosine functions have a period of 2π radians and the tangent function has a period of π radians. Domain and range: From the graphs above we see that for both the sine and cosine functions the domain is all real numbers and the range is all reals from −1 to +1 inclusive.
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i rlly dont want to make you wrong cause i feel lik im wrong but i got all of them as cant be sides of triangles
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i did use a calculator tho
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Hope this helps :)
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I think Substitution
Step-by-step explanation:
Because x is already solved for in the second equation.