Ask Question
29 July, 21:25

Sin (3x+19) = Cos (5x-25)

What is the value of x?

A) 6

B) 12

C) 18

D) 24

+5
Answers (2)
  1. 29 July, 22:46
    0
    B

    Step-by-step explanation:

    Using the cofunction identity

    sin x = cos (90 - x)

    Given

    sin (3x + 19) = cos (5x - 25), then

    3x + 19 = 90 - (5x - 25)

    3x + 19 = 90 - 5x + 25

    3x + 19 = 115 - 5x (add 5x to both sides)

    8x + 19 = 115 (subtract 19 from both sides)

    8x = 96 (divide both sides by 8)

    x = 12 → B
  2. 30 July, 01:21
    0
    12 B

    Took the test before
Know the Answer?
Not Sure About the Answer?
Find an answer to your question ✅ “Sin (3x+19) = Cos (5x-25) What is the value of x? A) 6 B) 12 C) 18 D) 24 ...” in 📘 Mathematics if you're in doubt about the correctness of the answers or there's no answer, then try to use the smart search and find answers to the similar questions.
Search for Other Answers