Part 1 of 2 Solve, finding all solutions in \( [0,2 \pi) \) or \( \left[0^{\circ}, 360^{\circ}\right) \). \( 8 \cos ^{2} x=2 \) The solution(s) in \( \left[0^{\circ}, 360^{\circ}\right) \) is/are \( x=\square \). (Type your answer in degrees. Do not include the degree symbol in your answer. Use a comma separate answers as needed.)

simplifier les expressions suivantes : \( A=\cos 23^{\circ}+\cos ^{2} 75^{\circ}+\cos ^{2} 15^{\circ}-\sin 67^{\circ} \) \( B=\left(\sin ^{2} 65^{\circ}+\tan ^{2} 55^{\circ}+\sin ^{2} 25^{\circ}\right) \times \sin ^{2} 35^{\circ}-\tan 45^{\circ} \)

What is the definition of cosecant in relation to a right triangle?

Simplifier les expressions suivantes : \( A=\cos 23^{\circ}+\cos ^{2} 75^{\circ}+\cos ^{2} 15^{\circ}-\sin 67^{\circ} ; \) \( B=\left(\sin ^{2} 65^{\circ}+\tan ^{2} 55^{\circ}+\sin ^{2} 25^{\circ}\right) \times \sin ^{2} 35^{\circ}-\tan 45^{\circ} \)

(6) \( \frac{\sqrt{2}}{2} \sin \frac{\pi}{2}+\cos \frac{\pi}{4} \)

اشرح كيفية إيجاد الكوسكانت لزاوية محددة استنادًا إلى أطوال الأضلاع في مثلث قائم الزاوية.