How do i find the missing angles of a triangle?

1 Answer
Kalit Gautam
Feb 21, 2018

By using any of these methods :-

Explanation:

1) use the fact that sum of all the angles of a triangle ia #180# degree.

2) use Sine formula. #[ a/sinA = b/sinB = c/sinC ]#

3) use Cosine formula.#[ cosA = (b^2+c^2-a^2)/(2bc)]#

#rarr#where #A# denotes #/_A#

#rarr# #a# denotes side opposite to #/_A#

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