Mathematics, 27.09.2019 18:30 cc14ty
1. draw a 30-60-90 triangle. label all angle measures and side relationships. using the side relationships from the figure, show that the following trigonometric identities hold true for the given angles:
a) tan(60)=sin(60)/cos(60)
b) sin^2(30)+cos^2(30)
Answers: 2
![sin^2 30^{\circ} + cos^2 30^{\circ}=[\frac{k}{2k}]^2+[\frac{k\sqrt{3}}{2k}]^2\\\\=\frac{1}{4}+\frac{3}{4}\\\\=\frac{4}{4}=1\\\\ \text{as}, Sin ^2 A +Cos ^2 A=1](/tpl/images/0268/7077/da290.png)
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1. draw a 30-60-90 triangle. label all angle measures and side relationships. using the side relatio...
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