Question

Trigonometry: "Find x, to the nearest tenth of a centimetre."

How and what formulas/etc. can I use to solve this?

Answer 1

The rule to be use is

SOC CAH TOA

But in this we use d CAH cox there's adjacent and hypothenos here

Explanation:

The first triangle

hyp²=opp.²+adj²

62²=x²+3.5²

x²=62²-3.5²

x²=3844-12.25

x²=3831.75