Find the value of x.
a) 80
b) 90
c) 45
d) 60​

b

Step-by-step explanation:

The tangent- tangent angle x is half the difference of its intercepted arcs.

Th sum of the arcs in a circle = 360°

major arc = 360° - 90° = 270° , then

x = (270 - 90)° = × 180° = 90° → b

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6 equilateral triangles