Question

Let Angle B be an acute angle in a right triangle. Approximate the measure of Angle B to
the nearest tenth of a degree when cos B = 0.2536.

Answer 1

Answer:

75.3°

Step-by-step explanation:

-To find the measure of angle B we find the cos inverse of B.

-Given cos B=0.2536, it's cos inverse is calculated as:

$\angle B=Cos ^{-1} (Cos \ B)\\\\=Cos^{-1}(0.2536)\\\\=75.3\textdegree$

Hence, the approximate measure of B is 75.3°