WebTake the inversesineof both sides of the equationto extract from inside the sine. Simplify the right side. Tap for more steps... The exact value of is . The sinefunctionis positive in the … WebSpherical Trigonometry. Spherical trigonometry is the branch of spherical geometry that deals with the metrical relationships between the sides and angles of spherical triangles, …
algebra precalculus - How to solve $\sin(2\theta)$ questions ...
WebTake the inverse sine of both sides of the equation to extract θ θ from inside the sine. 2θ = arcsin(−1 2) 2 θ = arcsin ( - 1 2) Simplify the right side. Tap for more steps... 2θ = − π 6 2 θ = - π 6 Divide each term in 2θ = − π 6 2 θ = - π 6 by 2 2 … WebOct 15, 2024 · Solving Trigonometric Equations. Solving a trigonometric equation follows the same steps that solving any other algebraic equation would. Usually, the goal is to get the unknown by itself, but ... portage county wisconsin judges
Expansions of sin(nx) and cos(nx) Brillia…
WebMar 22, 2016 · For Part 2a) you can use the identity $\sin^2\theta + \cos^2\theta = 1.$ Whenever you know $\sin\theta$ you can use this identity to solve for $\cos^2\theta.$ To get $\cos\theta,$ the square root of $\cos^2\theta$ tells you the magnitude, and by considering which quadrant the angle is in you can deduce the sign. WebSep 11, 2024 · First: sin ( 2 θ) = 2 sin θ cos θ = 2 ⋅ 12 13 ⋅ cos θ = 24 13 ⋅ cos θ Also: 1 = cos 2 θ + sin 2 θ 1 = cos 2 θ + ( 12 13) 2 1 = cos 2 θ + 144 169 1 − 144 169 = cos 2 θ 25 169 = cos 2 θ 25 169 = cos 2 θ 5 13 = cos θ Then we insert this into the previous equation: sin ( 2 θ) = 24 13 ⋅ cos θ = 24 13 ⋅ 5 13 = 120 169 WebOct 23, 2024 · How do you solve cos θ = sin θ? Trigonometry Trigonometric Identities and Equations Solving Trigonometric Equations 1 Answer José F. Oct 23, 2024 The answer is ± π 4 Explanation: cos(θ) = sin(θ) cos(θ) = cos( ± π 2 −θ) by trigonometric equivalences θ = ± π 2 − θ +2kπ with k any integer 2θ = ± π 2 +2kπ θ = ± π 4 + kπ Answer link portage county wi snowmobile trails