Asked by Tabitha
Find the exact value of sin75degrees+ sin15degrees.
Answers
Answered by
Higg
One way, if you've learned some trig properties... sin x + sin y = 2*sin((x+y)/2)*cos((x-y)/2)
So sin(75) + sin(75) = 2*sin(45)*cos(30) = 2*sqrt(2)/2*sqrt(3)/2 = sqrt(6)/2
So sin(75) + sin(75) = 2*sin(45)*cos(30) = 2*sqrt(2)/2*sqrt(3)/2 = sqrt(6)/2
There are no AI answers yet. The ability to request AI answers is coming soon!
Submit Your Answer
We prioritize human answers over AI answers.
If you are human, and you can answer this question, please submit your answer.