Cos Inverse is also written as Arccos and Cos-1 & is called an anti trigonometric function. The cos inverse is an inverse trigonometric function with restricted domains.
Bạn đang xem: Inverse sine, cosine, tangent
The Cos inverse Formula is :
Arc cos Questions
Cos inverse formula is one amongst the other six inverse trigonometric functions.
Question: Find the exact Value of Arccos(-½)
Solution:
arccos(- 1 / 2)
Assume y = arccos(- 1 / 2).
cos y = – 1 / 2 with 0 ≤ y ≤ Π (Cos Theorem) … (1)
Cos (π / 3) = 1 / 2 (Use table of Special Angles)
And also, cos(Π – x) = – cos x.
Xem thêm: Đề Thi Lớp 7 Học Kì 1 Môn Toán Lớp 7 Năm Học 2020, Đề Thi Học Kì 1 Lớp 7 Năm 2021
cos (π – π/3) = – 1 / 2 …(2)
Compare statement 1 with statement 1
y = Π – Π / 3 = 2 Π /3
Visit BYJU’S to lớn study other important trigonometry topics with solved examples.
FORMULAS Related Links | |
All Maths Formulas | Surface Area & Volume Formulas For All Shapes |
Convert Degree Celsius to Fahrenheit Formula | Fibonacci Formula |
Equivalent Weight Formula | Hypothesis Formula |
Hexagon Area Formula | Half Life Formula |
Area Of Parallelogram Diagonals | Dalton's Law Formula |
Leave a phản hồi Cancel reply
Your smartphone number and e-mail id will not be published. Required fields are marked *
*
Send OTP




Join BYJU'S Learning Program
Grade/ExamClass 1Class 2Class 3Class 4Class 5Class 6Class 7Class 8Class 9Class 10Class 11Class 12IASCATBank ExamGATE
Submit
COURSES
EXAMSCLASSES
EXAM PREPARATIONRESOURCES
COMPANYFOLLOW US
FREE TEXTBOOK SOLUTIONS
STATE BOARDS
FOLLOW US
×Book a không tính phí Class
GradeClass 1Class 2Class 3Class 4Class 5Class 6Class 7Class 8Class 9Class 10Class 11Class 12IASCATBank Exam