Television sizes are based on the length of the diagonal of the television's rectangular screen. So, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. If a 70 inch television's diagonal forms a 29° angle with the base of the screen, what is the vertical height (h) of the screen to the nearest inch

Question

anonymous · Answer

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jtvatsim · Answer

Same idea as the last one. Should be easy now. :)

anonymous · Answer

wait can you help me find the degree for angle A on this one? @jtvatsim

jtvatsim · Answer

Ahh, this is a little harder. We have hypotenuse and adjacent right? So we know that whatever the angle is (call it A), that cos(A) = adjacent/hypotenuse.

jtvatsim · Answer

So, cos(A) = 18/20.

To get the A "out" we will use cos^-1 on the calculator (sometimes called arccos). We then get A = cos^-1(18/20) = 25.8 about.

anonymous · Answer

oh okay that makes sense so like on this one my answer would be 19.7 (rounded it would be 20) right? @jtvatism

jtvatsim · Answer

Yep, you've got it!

quint4698 · Answer

flexing