Question

I really need help on this im bad at math anyway but i cant see graphs clearly first good answer will get brainliest Please help

Answer 1

$\sin(b) = \frac{3}{4} \\ b = inverse \: sine \: of \: \frac{3}{4} = 48.6$

Answer 2

Answer:

Exact value,  $\angle B=\sin^{-1}(\frac{3}{4})$

Approximation,  $\angle B\approx 48.6^\circ$

Step-by-step explanation:

In ΔABC, ∠C=90°

We are given a right angle triangle.

Side AB is hypotenuse = 4

Side AC is one leg = 3

Using trigonometry identity:

$\sin\angle B=\dfrac{Perpendicular}{Hypotenuse}$

$\sin\angle B=\dfrac{AC}{AB}$

$\sin \angle B=\dfrac{3}{4}$

$\angle B=\sin^{-1}(\frac{3}{4})$

$\angle B=48.59^\circ\approx 48.6^\circ$

The exact value of $\angle B=\sin^{-1}(\frac{3}{4})$

The approximation of $\angle B\approx 48.6^\circ$