111k views
2 votes
if x = 229,5° and y = 117,6° determine the two decimal places the values of1. sin (x+y)2. cos 2y3. cosec x

User Flux
by
7.0k points

1 Answer

4 votes

1) Let's make use of Trigonometry to find out the sine of the sum of the angles:


\sin (x+y)=\sin (x)cos(y)+\cos (y)\sin (x)

So plugging into that the given values for x and y we have:


\begin{gathered} \sin (x+y)=\sin (x)cos(y)+\cos (y)\sin (x) \\ \sin (229.5+117.6)=\sin (229.5)cos(117.6)+\cos (117.6)\sin (229.5) \end{gathered}

So now we can calculate the sin of 229.5º and multiply by the cosine of 117.6 and the cosine of 117.6º times the sine of 229.5º


undefined

User Hack
by
8.8k points

Related questions

asked Sep 4, 2022 10.4k views
Jiwon asked Sep 4, 2022
by Jiwon
7.5k points
1 answer
23 votes
10.4k views
asked Dec 9, 2022 69.0k views
Stephen Klancher asked Dec 9, 2022
by Stephen Klancher
8.2k points
1 answer
22 votes
69.0k views
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories