kindly solve this and explain how and why?
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Answer:
d = 23°
Step-by-step explanation:
By angle sum property of a triangle:
Sum of all angles in a triangle = 180°
=> d + 67° + 90° = 180°
=> d + 157° = 180°
=> d = 180° - 157°
=> d = 23°
Answer:
angle sum property says that the sum of the angles of the triangle is equal to 180°
so,
90 + 67 + d = 180
d + 67 = 90
d = 23
therefore , d = 23°