18. Use a calculator to evaluate the expression to the nearest tenth of a degree. cos-(0.8352) a. 36.8 b. 33.4° c. 37.9 d. 34.6 e. 35.7° 19. Use a calculator to evaluate each expression to the nearest tenth of a degree. sin-(-0.6271) a. -42.2° b.-43.3° - 40.0 d.-41.1 e.-38.8 y = cos-x. 20. Use your graphing calculator to graph command to evaluate the expression. in degree mode. Use the graph with the appropriate cos a. 140 b. 30° c. 45 d. 150° e. 120°

Q: Use the formula o = - to find the value of the missing variable. @ = 0.9509 radians per sec, t=…

A:

Q: Use a calculator to evaluate each expression to the nearest tenth of a degree. sin-(-0.6271) -42.2°…

A:

Q: Which of the following is NOT equal to cos(-576°)? DO NOT USE A CALCULATOR! Enter, a, b, c, d, or e.…

A: The given trigonometric expression .We have to find the expression that is not equal to the given…

Q: Approximate the value to the nearest thousandth Cos 49°

A: Answer : The approximate value of cos(49°) to the nearest thousandth is written as ;    Cos(49°) =…

Q: Use a calculator to find the value of the following expression rounded to two decimal places. 11 12…

A:

Fundamentals of Trigonometric Identities

Trigonometric Identities are the equalities that involve trigonometry functions and hold for all the values of variables given in the equation.