Question

if 4,5 are two sides of a triangle and the included angle is 60 degrees , find its area​

Answer 1

Answer:

5√3

Step-by-step explanation:

Let ABC be the triangle AC=5,AB=4

angel is 60

So sin60=p /h

√3/2 = p /5

5√3/2 =p =h

Area of triangle =1/2 ×b × h

1/2× 4 × 5√3 /2

=5√3 (answer)

Answer 2

Step-by-step explanation:

answer =6

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