![\bf sin^2(x)-cos^2(x)\implies sin^2(x)-[1-sin^2(x)]=0 \\\\\\ sin^2(x)-1+sin^2(x)=0\implies 2sin^2(x)=1\implies sin^2(x)=\cfrac{1}{2} \\\\\\ sin(x)=\pm\sqrt{\cfrac{1}{2}}\implies \measuredangle x=sin^{-1}\left( \pm\sqrt{\cfrac{1}{2}} \right)\iff \measuredangle x=sin^{-1}\left( \pm\cfrac{\sqrt{2}}{2} \right) \\\\\\ \measuredangle x= \begin{cases} \frac{\pi }{4}\\\\ \frac{3\pi }{4}\\\\ \frac{5\pi }{4}\\\\ \frac{7\pi }{4} \end{cases}](/tpl/images/0480/7254/fe581.png)
Solve the equation exactly overbthe interval [0,360)
sin^2x-cos^2x=0...
Mathematics, 29.01.2020 06:12 colyernicholas44
Solve the equation exactly overbthe interval [0,360)
sin^2x-cos^2x=0
Answers: 1
Another question on Mathematics
Mathematics, 21.06.2019 15:10
Which equation represents the partial sum of the geometric series?
Answers: 1
Mathematics, 21.06.2019 17:00
Line gh passes through points (2, 5) and (6, 9). which equation represents line gh? y = x + 3 y = x – 3 y = 3x + 3 y = 3x – 3
Answers: 1
Mathematics, 21.06.2019 17:50
Which of these triangle pairs can be mapped to each other using two reflections?
Answers: 1
Mathematics, 21.06.2019 19:00
Rob spent 25%, percent more time on his research project than he had planned. he spent an extra h hours on the project. which of the following expressions could represent the number of hours rob actually spent on the project? two answers
Answers: 3
You know the right answer?
Questions
Mathematics, 23.03.2021 19:50
History, 23.03.2021 19:50
Mathematics, 23.03.2021 19:50
Mathematics, 23.03.2021 19:50
Social Studies, 23.03.2021 19:50
