Use the sine ratio to find x. The hypotenuse is 85. The angle is 18 degrees and a right angle.

Question

Use the sine ratio to find x.  The hypotenuse is 85. The angle is 18 degrees and a right angle.

anonymous · Answer

I understand the sine, cosine, and tangent formula but I do not know how to plug in the numbers on my calculator

anonymous · Answer

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How do I figure out x using the formula for sine, cosine, and tangent

anonymous · Answer

well sin is opp/hyp, cos is adj/hyp and tan is opp/adj. In this one it would be easiest to use sin so your equation would look like

$$\sin(18^{o})=\frac{ x }{ 85 }$$

does this help?

anonymous · Answer

Yes. But how would I solve for x?  If sin 18 = .3090 .... I'm still not sure how to turn it around to get the answer

anonymous · Answer

well assuming your calculator is using degrees. is sin 18 = .3090......
then just multiply by 85 and you get your answer

85sin(18)=x

anonymous · Answer

26.3 = x

anonymous · Answer

hope this helps!

anonymous · Answer

YES!  Thank you so much

anonymous · Answer

You are welcome! :)