Question

In a right triangle pqr the hypotenuse of length 10 cm angle pqr = 30 degree find the area of triangle

Answer 1

Hypotenuse is 10 cm.

Let the other two sides a,b

Sin 30= a/10

a=5

Cos 30=b/10

b=(3)^1/2×5

Area=ab=25×(3)^1/2