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zaharov [31]
3 years ago
6

Find the value of x in the triangle shown below

Mathematics
2 answers:
Feliz [49]3 years ago
5 0

Answer:

x = 48°

Step-by-step explanation:

Two sides of the triangle are equal, both 7, Then the 2 base angles are congruent, both 66°

The sum of the 3 angles in the triangle sum to 180° , so

x = 180° - (66 + 66) = 180° - 132° = 48°

adoni [48]3 years ago
3 0

Answer:

{ \tt{x + 66 + 66 = 180}} \\ x = 48   \degree \\  \\ { \boxed{ \bf{or : }}} \\ { \bf{ from \:lamis \: theorem : }} \\ { \tt{ \frac{5.7}{ \sin(x)  }  =  \frac{7}{ \sin(66 \degree) } }}  \\ \\ { \tt{x =  { \sin }^{ - 1}( \frac{5.7 \times  \sin(66 \degree) }{7} ) }} \\ x = 48 \degree

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