The value of sin square 30 degree +cos square 30 degree is ---- a)0 b)2 c)3 d)1

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Please find below the solution to the asked query:

$$\begin{gathered} \mathrm{As} {\sin }^2\mathrm{\theta }+{\cos }^2\mathrm{\theta }=1, \mathrm{hence} \\ {\sin }^{2}30+{\cos }^{2}30=1... \mathrm{Option}\left(\mathrm{D}\right) \mathrm{is} \mathrm{correct}. \end{gathered}$$

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