Question

CAN SOMEONEHELP PLS ASAP

Answer 1

a ≈ 2.2

Explanation:

Using the Cosine rule in Δ ABC

a² = b² + c² - 2bc cos A

Here b = 3, c = 4 and A = 32° , thus

a² = 3² + 4² - (2 × 3 × 4 × cos32° )

= 9 + 16 - 24cos32°

= 25 - 24cos32° ( take the square root of both sides )

a =
`√(25-24cos32)` ≈ 2.2