help please look at attachment

Question

anonymous · Answer

attachment

bahrom7893 · Answer

Cos(42) = 35/y
y = 35/Cos(42)

anonymous · Answer

but i got a negative number..

directrix · Answer

@rini  got a negative number..

Would you show your work? That would help in figuring out what is wrong. 35 is positive and so is Cos (42). 

Question: Is your calculator set to degrees?

anonymous · Answer

i did 35/cos(42) and got -87.503

directrix · Answer

Cosine of an acute angle in this right triangle is defined to be the length of the adjacent leg over the hypotenus.

So, Cos(42) = 35/y as Bahrom wrote above.

.743 = 35/y

.743/1 = 35/y

.743 y = 35

y = 35/(.743)

y = 26.005

directrix · Answer

To two decimal places, y = 26.01

anonymous · Answer

it said the right anser was 47.1

directrix · Answer

The question now in my mind is "Do you see anything wrong with the work here?

directrix · Answer

sin 48 = 35/ y
.707 = 35/y

y = 35/.707
y = 49 .504 which is 49. 50 to two digits.

Interesting.

directrix · Answer

The answers should be the same. I am working on resolving what ran amok with the calculations.

directrix · Answer

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