Advertisements
Advertisements
Question
Solve for x : 2 cos (3x − 15°) = 1
Sum
Advertisements
Solution
2 cos(3x –15°) = 1
cos (3x – 15°) = `(1)/(2)`
cos (3x – 15°) = cos 60°
3x – 15° = 60°
3x = 75°
x = 25°
shaalaa.com
Trigonometric Equation Problem and Solution
Is there an error in this question or solution?
RELATED QUESTIONS
Solve for x : sin2 x + sin2 30° = 1
If θ = 30°, verify that: 1 - sin 2θ = (sinθ - cosθ)2
Find the value of 'x' in each of the following:
Find the value of 'x' in each of the following:
Find the length of EC.
Find the value 'x', if:
Find x and y, in each of the following figure:
If P, Q and R are the interior angles of ΔPQR, prove that `cot(("Q" + "R")/2) = tan "P"/(2)`
Prove the following: tanθ tan(90° - θ) = cotθ cot(90° - θ)
Prove the following: sin58° sec32° + cos58° cosec32° = 2
