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Alex_Xolod [135]
3 years ago
5

Which is a value of x if sin 60°=cos(x+10)°

Mathematics
1 answer:
IRISSAK [1]3 years ago
3 0
Solution
cos (90-60)=cos (x+10)
⇒30=x+10
x=30-10
x=20.
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\bf \stackrel{\textit{circumference of a circle}}{C=d\pi }~~ \begin{cases} d=diameter\\[-0.5em] \hrulefill\\ d=27 \end{cases}\implies C=27\pi \implies C=\stackrel{\pi =3.14}{84.78} \\\\[-0.35em] ~\dotfill\\\\ \stackrel{\textit{perimeter of the rectangles}}{288}~~~~+~~~~\stackrel{\textit{perimeter of the circle}}{84.78}~~~~=~~~~372.78

6 0
3 years ago
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Read 2 more answers
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