Please help!

Use △DEF, shown below, to answer the question that follows:

What is the value of x rounded to the nearest hundredth?

Question

Please help!

Use △DEF, shown below, to answer the question that follows:

What is the value of x rounded to the nearest hundredth?

anonymous · Answer

attachment

anonymous · Answer

@phi You there?

phi · Answer

for the angle at D, which trig function should we use ?

anonymous · Answer

I think it should be the sin function? Because x is the adjacent.

phi · Answer

people use SOH CAH TOA to remember  
or
oscar had a heap of apples
sin             cos      tan

anonymous · Answer

Oh okay, well for this triangle, I think we should use sin because the Hypotenuse is 55 degrees and the Opposite is x which and we're also given the degrees for sin when it's being put into a fraction.

phi · Answer

side x is the adjacent side for angle D

anonymous · Answer

Oh, sorry, now I see. I was looking at it a different way. So then we'd use the cos function.

phi · Answer

yes, cos.
and sides are lengths (and measured in for example, feet, inches, meters, miles, *not* degrees)
angles are measured in degrees or radians

anonymous · Answer

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