... cosine 4 theta equals what in terms of cosine theta? i know that you break it up into sin (2theta)+ sin (theta) and sin (2theta) turns to 2sin (theta)+ cos (theta) but that do i do with the sin (theta)? I need to express cos(theta) in terms of sin(theta) only. Cosine 4 theta equals what in terms of cosine theta? What is the purpose of the other planets in our solar system? sin theta, or both a. cot squared theta tan theta b. tan theta + cot theta c. sec theta cos squared theta Free math lessons and math homework help from basic math to algebra, geometry and beyond. In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) are functions of an angle. How do you solve #cos 2theta + 5 cos theta + 3 = 0#? Thank you in advance for your help. In mathematics, the trigonometric functions (also called circular functions, angle functions or goniometric functions) are functions of an angle. cos in power of 6 theta in terms of sin theta i need it using demovire's theorem .....cos to the power of 6 theta 1 Answer cot(pi/2 - theta) = sqrt(35) Please see the explanation for the process. How do you solve cos (4 * theta) in terms of cos (theta) using double/half angle formula? I need to express cos(theta) in terms of sin(theta) only. how to find (theta) so that cos (theta) = 1/2 ... 02-08-2015, 08:02 PM #6. abel muroi. Stock: THETA (9075), Company: THETA EDGE BERHAD, Description: Theta Edge Berhad formerly Lityan Holdings Berhad, is an investment holding company. if sin theta =1/4, theta in quadrant II, find the exact value of cos[theta +pi/6] - 2396531 Trigonometry Trigonometric Identities and Equations Solving Trigonometric Equations. Answer to If 90 degrees