Help needed to solve these:(adsbygoogle = window.adsbygoogle || []).push({});

1)what is the minimum value of the expression 9tan^2 [tex]\theta[/tex] + 4cot^2 [tex]\theta[/tex] ?

2)Prove that sin20.sin40.sin60.sin80 =3/16

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# Homework Help: Two simple trigo probs

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