If \[\mathbf{co}{{\mathbf{t}}^{\mathbf{4}}}\theta \text{ }\mathbf{-}\text{ }\mathbf{co}{{\mathbf{t}}^{\mathbf{2}}}\theta \mathbf{=1}\], then the value of \[\mathbf{co}{{\mathbf{s}}^{\mathbf{4}}}\theta \text{ }+\text{ }\mathbf{co}{{\mathbf{s}}^{\mathbf{2}}}\theta \] is _________

If \[\mathbf{co}{{\mathbf{t}}^{\mathbf{4}}}\theta \text{ }\mathbf{-}\t

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

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If \[\mathbf{co}{{\mathbf{t}}^{\mathbf{4}}}\theta \text{ }\mathbf{-}\text{ }\mathbf{co}{{\mathbf{t}}^{\mathbf{2}}}\theta \mathbf{=1}\], then the value of \[\mathbf{co}{{\mathbf{s}}^{\mathbf{4}}}\theta \text{ }+\text{ }\mathbf{co}{{\mathbf{s}}^{\mathbf{2}}}\theta \] is _________

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