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Interior Angles of a Triangle
ZA, ZB, ZC are the interior angles of AABC.
MZABC + mZBAC + m ZACB
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IC С class 7
Answers
Answered by
2
Answer:
sorry I really don't know....
Answered by
0
Answer:
sin
2
B+C
=sin(
2
180
o
−A
)
[∵A+B+C=180
o
⇒B+C=180
o
−A]
=sin(90
o
−
2
A
)=cos
2
A
[∵sin(90
o
−θ)=cosθ]
Step-by-step explanation:
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