Question

if two angle of triangle are 25 and 55 respectivly then find the third angle

Answer 1

Answer:

If you know two angles, then you can work out the third since all the angles sum to 180 degrees. If the sides are a, b and the hypotenuse is c (opposite angle A), and the angles are A, B and C, then Sin A = a/c, so a = cSin A. Also Cos A = b/c, so b = cCos A.

Answer 2

Answer:

100°

Step-by-step explanation:

a+b+c=180°

a=25°

b=55°

c=?

25°+55°+c=180°

80°+C=180°

C=180°-80°

C=100°

HOPE ITS HELPS YOU