Question

50.
30): In a triangle ABC if / A-/B=42° and/B-/ C=21° then
B=​

Answer 1

Answer:

Step 1 The two sides we know are Opposite (300) and Adjacent (400).

Step 2 SOHCAHTOA tells us we must use Tangent.

Step 3 Calculate Opposite/Adjacent = 300/400 = 0.75.

Step 4 Find the angle from your calculator using tan-1