IXL-Trigonometric ratios: sin, cos, and X ixl.com/math/level-l/trigonometric-ratios-sin-cos-and-tan Google Home Page C Home - Canva 57 Find the cosine of ZC. B D + = 3 Submit Card & Billing Accounts √66 C AA Tools School Apps Write your answer in simplified, rationalized form. Do not round. cos (C)= Health Apps YouTube Work it out Not feeling ready yet? These can help:
IXL-Trigonometric ratios: sin, cos, and X ixl.com/math/level-l/trigonometric-ratios-sin-cos-and-tan Google Home Page C Home - Canva 57 Find the cosine of ZC. B D + = 3 Submit Card & Billing Accounts √66 C AA Tools School Apps Write your answer in simplified, rationalized form. Do not round. cos (C)= Health Apps YouTube Work it out Not feeling ready yet? These can help:
Trigonometry (11th Edition)
11th Edition
ISBN:9780134217437
Author:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Publisher:Margaret L. Lial, John Hornsby, David I. Schneider, Callie Daniels
Chapter1: Trigonometric Functions
Section: Chapter Questions
Problem 1RE:
1. Give the measures of the complement and the supplement of an angle measuring 35°.
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Question
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![**Instruction:**
Find the cosine of ∠C.
**Triangle Diagram Explanation:**
- The triangle is a right-angled triangle.
- The vertices are labeled as D, B, and C.
- The side BC (adjacent to ∠C) is labeled with the length 3.
- The side BD (opposite to ∠C) is labeled with the length √57.
- The hypotenuse DC is labeled with the length √66.
- The right angle is at vertex B.
**Task:**
Write your answer in simplified, rationalized form. Do not round.
**Cosine Formula:**
\[ \cos(C) = \frac{\text{Adjacent}}{\text{Hypotenuse}} \]
**Input Field:**
\[ \cos(C) = \Box \]
**Buttons:**
- A fraction button
- A square root button
**Action Button:**
- Submit
**Help Options:**
- “Work it out”
- “Not feeling ready yet? These can help:”](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F46e25c80-76d1-40fc-b8ee-938f2c7ceeae%2Fe52498f0-fbce-4b84-88bb-faae02e9db39%2Fchk55sv_processed.jpeg&w=3840&q=75)
Transcribed Image Text:**Instruction:**
Find the cosine of ∠C.
**Triangle Diagram Explanation:**
- The triangle is a right-angled triangle.
- The vertices are labeled as D, B, and C.
- The side BC (adjacent to ∠C) is labeled with the length 3.
- The side BD (opposite to ∠C) is labeled with the length √57.
- The hypotenuse DC is labeled with the length √66.
- The right angle is at vertex B.
**Task:**
Write your answer in simplified, rationalized form. Do not round.
**Cosine Formula:**
\[ \cos(C) = \frac{\text{Adjacent}}{\text{Hypotenuse}} \]
**Input Field:**
\[ \cos(C) = \Box \]
**Buttons:**
- A fraction button
- A square root button
**Action Button:**
- Submit
**Help Options:**
- “Work it out”
- “Not feeling ready yet? These can help:”
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