Question

I really need help on this please anyone help

What Is the measure of angle A

Answer 1

option 4, 19.47°

Explanation:

From angle A, the given side length are opposite and hypotenuse

SOH CAH TOA is

sinx = opposite / hypotenuse

cosx = adjacent / hypotenuse

tanx = opposite / adjacent

visual representation below

the given length fits the characteristic to use sin

sinA = opposite / hypotenuse

• opposite = 4

• hypotenuse = 12

sinA = 4 / 12

common facto is 4 it becomes sinA = 1 / 3

Apply trig inverse property,

x = arcsin(1/3)

x = 19.47122°

Answer 2

sin A = 4/12 = 1/3

sin inv 1/3 = 19.47⁰