Question

In triangle ABC if a=10 and R =5 then find angle A

Answer 1

Answer:

given data

triangle ABC

a=10(a=h)

R=5(R=b)

Area of triangle ABC=h×b/2

A=10×5/2

A=50/2

A=25

Answer 2

area of triangle ABC=h×b÷2

A=10×5÷2

A=50÷2

A=25