Which of the following relation(s) is/are cor | vedclass

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(B) Let us evaluate each relation using trigonometric identities:$(A)\ \sin (90^{\circ}+	heta) = \cos 	heta$ and $\cos (-	heta) = \cos 	heta$. Thu

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$A$ and $B$

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(B) Let us evaluate each relation using trigonometric identities:$(A)\ \sin (90^{\circ}+	heta) = \cos 	heta$ and $\cos (-	heta) = \cos 	heta$. Thus,$\cos 	heta = \cos 	heta$. This is correct.$(B)\ \sin (180^{\circ}-	heta) = \sin 	heta$ and $\cos (90^{\circ}-	heta) = \sin 	heta$. Thus,$\sin 	heta = \sin 	heta$. This is correct.$(C)\ \sin (360^{\circ}-	heta) = -\sin 	heta$ and $\cos (360^{\circ}-	heta) = \cos 	heta$. Since $-\sin 	heta 
eq \cos 	heta$,this is incorrect.$(D)\ \sin (180^{\circ}+	heta) = -\sin 	heta$ and $\cos (90^{\circ}-	heta) = \sin 	heta$. Since $-\sin 	heta 
eq \sin 	heta$,this is incorrect.Therefore,only relations $(A)$ and $(B)$ are correct.

Which of the following relation$(s)$ is/are correct?
$(A)\ \sin (90^{\circ}+\theta)=\cos (-\theta)$
$(B)\ \sin (180^{\circ}-\theta)=\cos (90^{\circ}-\theta)$
$(C)\ \sin (360^{\circ}-\theta)=\cos (360^{\circ}-\theta)$
$(D)\ \sin (180^{\circ}+\theta)=\cos (90^{\circ}-\theta)$

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Which of the following relation$(s)$ is/are correct?$(A)\ \sin (90^{\circ}+\theta)=\cos (-\theta)$$(B)\ \sin (180^{\circ}-\theta)=\cos (90^{\circ}-\theta)$$(C)\ \sin (360^{\circ}-\theta)=\cos (360^{\circ}-\theta)$$(D)\ \sin (180^{\circ}+\theta)=\cos (90^{\circ}-\theta)$