Question

Spherical triangle ABC has C=90 degrees. If a=138 and b =34 degrees, find A.

Answer 1

In a spherical triangle with angle C as 90 degrees, we can find angle A by subtracting angle b from 180 degrees.

Step-by-step explanation:

In a spherical triangle, the sum of the angles is greater than 180 degrees but less than 540 degrees. Since angle C is 90 degrees, the sum of angles A and B is 180 degrees. Given that angle b is 34 degrees, we can find angle A by subtracting angle b from 180 degrees:

Angle A = 180 degrees - angle b

Angle A = 180 degrees - 34 degrees

Angle A = 146 degrees