Question

IN a ∆ ABC IF A=40°,B90° THEN C IS
a)60°,b)50°,c)40°,d)70°​

Answer 1

Answer:

50

Step-by-step explanation:

it is the correct answer

Answer 2

Given: In a triangle ABC,   ∠A = 40°

           ∠B = 90°

To find: ∠c

Step by step explanation:

Since we know that sum of all angles  of a triangle is 180°

∴ ∠A + ∠B + ∠C = 180°

⇒40° + 70° + ∠C = 180°

⇒110° + ∠C = 180°

⇒ ∠C = 180° - 110°

⇒ ∠C = 70°

Answer: ∠C = 70°