answer:answer is 90
Step-by-step explanation:because when diameter form angle on any point of circle then it form 90
Given: AOB is the diameter of the circle
∠ACB = 90°
AC = BC
Now, according to the property, we know that angles opposite to equal sides are equal
Therefore, ∠CAB = ∠CBA
We have to find ∠CAB
We also know that, sum of angles of a triangle is 180°
So, ∠ACB + ∠CAB + ∠CBA = 180°
90 + 2∠CAB = 180
2∠CAB = 90
Hence, measure of ∠CAB is 45°
answer: will you please send with the image its confusing
CYCLIC QUADRILATREL IS 90
CA + BA = 90
THEREFORE CAB = 90IF THER IS ANY CORRECTION PLS TELL
NOTE:-I will use D in place of B.
Angle subtended by a chord at the centre is double that of the angle subtended by chord on circumference.
Since diameter subtend 180° at centre therefore it subtend 90° at the circumference.
We can say that ∠ACD=90°
Since it given that AC=DC so the base angles are equal.
In triangle ACD-
From this, we can conclude that-
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