Question

What topic name does this equation go into in physics?
`A_(x) = A cos\theta`

Answer 1

Trigonometry

Step-by-step explanation:

Answer 2

`\huge \boxed{\mathfrak{Question} \downarrow}`

• What topic name does this equation go into in physics?
  `A_(x) = A cos\theta`

`\large \boxed{\mathfrak{Answer \: with \: Explanation} \downarrow}`

`\huge \boxed{\sf \: A_(x) = A cos\theta}`

• So, I think this equation will go under Types of Physical quantities, Vector Quantities, Magnitude, Direction, etc. under physics & Trigonometry under Mathematics.
• This formula is used when we need to find the 'x' component of the vector. You need to know basic trigonometry to solve these type of equations & also how to convert between magnitude & angles.