Question

A. 37 b. 62 c. 60 d. 39

Answer 1

Answer:

39 lang po

Step-by-step explanation:

samatolong sana lag Yan nyo po Ng brainlest

Answer 2

$\huge\bold{Given :}$

Angle ABC = 81°

Angle BAC = a°

Angle BCA = 62°

$\huge\bold{To\:find :}$

The measure of a.

$\large\mathfrak{{\pmb{\underline{\orange{Solution}}{\orange{:}}}}}$

$\longrightarrow{\green{a.\:37°}}$ 

$\large\mathfrak{{\pmb{\underline{\red{Step-by-step\:explanation}}{\red{:}}}}}$

We know that,

$\sf\pink{Sum\:of\:angles\:of\:a\:triangle\:=\:180°}$

➪ ∠ ABC + ∠ BAC + ∠ BCA = 180°

➪ 81° + a° + 62° = 180°

➪ a° + 143° = 180°

➪ a° = 180° - 143°

➪ a° = 37°

Therefore, the measure of a is 37°.

Now, the three angles of the triangle are 81°, 37° and 62°.

$\large\mathfrak{{\pmb{\underline{\blue{To\:verify}}{\blue{:}}}}}$

∠ ABC + ∠ BAC + ∠ BCA = 180°

✒ 81° + 37° + 62° = 180°

✒ 180° = 180°

✒ L. H. S. = R. H. S.

$\boxed{Hence\:verified.}$

( Note: Kindly refer to the attached file. )

$\huge{\textbf{\textsf{{\orange{My}}{\blue{st}}{\pink{iq}}{\purple{ue}}{\red{35}}{\green{ヅ}}}}}$