Tech

Answer 1 To find the exact values of trigonometric functions for non-standard angles like 75° or 15°, use angle sum and difference identities. For example, sin(75°) = sin(45° + 30°) = sin(45°)cos(30°) + cos(45°)sin(30°). Similarly, cos(75°) and...

Answer 1 To determine the time taken to travel 262.5 miles at 75 miles per hour, divide the distance by the speed: 262.5 miles ÷ 75 miles per hour = 3.5 hours. To find the distance traveled in 7 hours at the same speed, multiply the speed by the...

Answer 1 The substitution method for solving systems of linear equations involves isolating one variable in one equation and substituting this expression into the other equation. This reduces the system to a single equation with one variable, which...