If \[\mathbf{co}{{\mathbf{s}}^{\mathbf{2}}}\theta \text{ }+\text{ }\mathbf{cos}\text{ }\theta =\mathbf{1}\], then find the value of \[\mathbf{si}{{\mathbf{n}}^{\mathbf{4}}}\theta \text{ }+\text{ }\mathbf{si}{{\mathbf{n}}^{\mathbf{2}}}\theta \].

If \[\mathbf{co}{{\mathbf{s}}^{\mathbf{2}}}\theta \text{ }+\text{ }\ma

1.	If \[\mathbf{co}{{\mathbf{s}}^{\mathbf{2}}}\theta \text{ }+\text{ }\mathbf{cos}\text{ }\theta =\mathbf{1}\], then find the value of \[\mathbf{si}{{\mathbf{n}}^{\mathbf{4}}}\theta \text{ }+\text{ }\mathbf{si}{{\mathbf{n}}^{\mathbf{2}}}\theta \].
A.	0
B.	1
C.	\[-\]1
D.	\[\cos \theta \]
Answer» C. \[-\]1

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If \[\mathbf{co}{{\mathbf{s}}^{\mathbf{2}}}\theta \text{ }+\text{ }\mathbf{cos}\text{ }\theta =\mathbf{1}\], then find the value of \[\mathbf{si}{{\mathbf{n}}^{\mathbf{4}}}\theta \text{ }+\text{ }\mathbf{si}{{\mathbf{n}}^{\mathbf{2}}}\theta \].

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