Question

Answer 1

a) 

\(sinB=\dfrac{AC}{BC}\\ cosB=\dfrac{AB}{BC}\\ tanB=\dfrac{AC}{AB}\\ cotB=\dfrac{AB}{AC}\\ sinC=\dfrac{AB}{BC};cosC=\dfrac{AC}{BC}\\ tanC=\dfrac{AB}{AC}\\ cotC=\dfrac{AC}{AB}\) 

b) 

\(sinA_1=\dfrac{CH}{AC}\\ cosA_1=\dfrac{AH}{AC}\\ tanA_1=\dfrac{CH}{AH}\\ cotA_1=\dfrac{AH}{CH}\)

c) 

\(sinA_2=\dfrac{BH}{AB}\\ cosA_2=\dfrac{AH}{AB}\\ tanA_2=\dfrac{BH}{AH}\\ cotA_2=\dfrac{AH}{BH}\)