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trapecia [35]
3 years ago
7

Help! What is the measure of angle K in the triangle below?

Mathematics
1 answer:
mixer [17]3 years ago
8 0

ANSWER

K=43° to the nearest degree

EXPLANATION

Use the sine rule:

\frac{ \sin(J) }{j}  =  \frac{ \sin(L)}{l}

Substitute the values

\frac{ \sin(J) }{10}  =  \frac{ \sin(102 \degree)}{17}

This gives us,

\sin(J)   =  \frac{ \sin(102 \degree)}{17}  \times 10

J =  \sin ^{ - 1} (0.57538094161) = 35.126 \degree

J is approximately 35°

We now use the sum of interior angles of a triangle to find K.

K + 35 \degree + 102 \degree = 180 \degree

K  = 180 \degree -  35 \degree  -  102 \degree

K  = 43 \degree

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