Cos 45: Ex 8

Ex 8.2, 1 Evaluate the following : (iii) " cos 45 °" /"sec 30° + cosec 30°" We know that, " cos 45 °" = 1/√2 "sec 30°" = 1/ ( cos ⁡〖30°〗 ) = 1/ (√3/2 ... Use our cos (x) calculator to find the cosine of 45 degrees - cos (45 °) - or the cosine of any angle in degrees and in radians. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor. Understand the trigonometric concept of Cos 45 degrees. Learn its value, proof, and how it relates to other trigonometric ratios like sine and tangent. Also, explore solved examples and practice questions to solidify your understanding.