Question

ab is the diameter and ac is a chord of the circle such that angle cab =40 if bd is the tangent to the circle then angle cbd is​

Answer 1

Step-by-step explanation:

tri. ACB

Ang.A + C + B = 180degree

40 + 90 +B = 180 degree

B = 180 - 130

B = 50 degree

Angle CBD = 90 + 50 i.e. 140

( angle substended by tangent is 90 degree and angle substended by diameter is also 90 degree....I hope uh git got it...

Answer 2

Step-by-step explanation:

given:

cab=40

acb=90. (BECAUSE. angle made by ends of daimeter to any point on the circle)

cba=50. (sum of interior angles of triangle)

abd=90. (tanget is perpendicular to the line joining center)

cbd=abc+abd

=50+90

=140