Question

3)
In triangleABC, if A=45°, B = 60° then find the ratio of its sides.​

Answer 1

Answer:

∠A=45o,∠B=60o

By Angle sum property of a triangle 

∠A+∠B+∠C=180O

45o+60o+∠C=180o

⇒ ∠C=180o−105o=75o

By sine rule, a:b:c=sinA:sinB:sinC

⇒ a:b:c=sin45o:sin60o:sin75o

⇒ a:b:c=21:23:sin(90−15o)

⇒ a:b:c=21:23:cos15o

=22

Step-by-step explanation:

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