1 and -1 are the only rational numbers which are their own reciprocal.
Answer:
Which statements did you include in your answer?
Isolate sin(x) by adding 4 and taking the square root of both sides.
State that sin(x) = 2 or sin(x) = –2.
State that –2 and 2 are undefined values of the inverse sine function.
There are no solutions because –2 and 2 are not in the domain of the function.
Step-by-step explanation:
2x+9x+4
Tetrahedron is a Platonic solids which is also a pyramid, i.e. Option (A).
Pyramid is a three dimensional shape. Pyramid is a polyhedron formed by connecting a polygonal base and a point. A triangular pyramid is also called a tetrahedron.
So,
As mentioned in the above definition "A triangular pyramid is also called a tetrahedron."
Hence, we can say that Tetrahedron is a Platonic solids which is also a pyramid, i.e. Option (A).
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