Question

A circle passes through the vertices of a triangle ABC where BC is the diameter. if C=45°, that B is- (a)45°
(b)30° (c)60° (d)90°
Please step by step explain jaldi please kar do koi

Answer 1

Answer:

Since Bc is diameter angle A must be equal to 90°.Angle c is 45°,So by using angle sum property of traingles we get angle B =45°.

hence option a is the required correct answer....

@ANUJ

Answer 2

Answer:

45

Step-by-step explanation:

GIVEN

=BC is diameter of circle

C=45

TO FIND=angle b

PROOF=

=angle of semi circle subtend right angle

since angle A=90(ANGLE OF SEMI CIRCLE)

IN TRIANGLE ABC

A+B+C=180

90+B+C=180(JUST PROVED)

90+B+45=180(GIVEN)

B+135=180

B=180-135

B=45

HOPE THIS HELPS YOU