Solve the equation \(5\cos (6x - 20)^\circ + 3 = 7.25\), for \(0 \le x \le 180\).

Practise solving trigonometric equations in degrees or radians using CAST and its period to find other solutions within the range, including multiple or compound angles and the wave function.

CBSE Class 10 Maths Chapter 9 Practice Questions 2025: CBSE Class 10 students check the competency-based practice questions of Mathematics for Chapter 9 Some Applications of Trigonometry. Download the ...