Ask Question
8 July, 20:24

The angle / theta_1θ 1 theta, start subscript, 1, end subscript is located in Quadrant / text{I}Istart text, I, end text, and / cos (/theta_1) = / dfrac{3}{8}cos (θ 1 ) = 8 3 cosine, left parenthesis, theta, start subscript, 1, end subscript, right parenthesis, equals, start fraction, 3, divided by, 8, end fraction. What is the value of / sin (/theta_1) sin (θ 1 ) sine, left parenthesis, theta, start subscript, 1, end subscript, right parenthesis?

+1
Answers (1)
  1. 8 July, 20:43
    0
    (√55) / 8

    Step-by-step explanation:

    The sine and cosine are related by ...

    sin² + cos² = 1

    Then the sine of the angle is ...

    sin (θ₁) = √ (1 - cos (θ₁) ²)

    sin (θ₁) = √ (1 - (3/8) ²) = √ (55/64)

    sin (θ₁) = (√55) / 8
Know the Answer?
Not Sure About the Answer?
Find an answer to your question 👍 “The angle / theta_1θ 1 theta, start subscript, 1, end subscript is located in Quadrant / text{I}Istart text, I, end text, and / cos ...” in 📗 Mathematics if the answers seem to be not correct or there’s no answer. Try a smart search to find answers to similar questions.
Search for Other Answers