Math Problem Statement
Si θ está entre π y 2π, cos(θ) = -\frac{\sqrt{3}}{2} y ϕ es un ángulo agudo positivo tal que cos (ϕ) = 7/25 , determine el valor exacto de cos(θ + ϕ).
Solution
Ask a new question for Free
By Image
Drop file here or Click Here to upload
Math Problem Analysis
Mathematical Concepts
Trigonometry
Sum of angles
Cosine function
Sine function
Formulas
Sum of angles formula for cosine: cos(θ + ϕ) = cos(θ)cos(ϕ) - sin(θ)sin(ϕ)
Theorems
-
Suitable Grade Level
Advanced High School