Question

Find mTCB in circle p

Answer 1

270

Explanation:

so you put tcb together then add a little to 128

you get 270

Answer 2

(C) 270

Explanation:

Given: In the circle P, ∠TPB=90° and ∠TPC=128°.

To find: mTCB in circle P.

Solution: It is given that In the circle P, ∠TPB=90° and ∠TPC=128°, then

`mTB+mTCB=360^(\circ)`(sum of the minor and the major arc is 360°)

⇒
`90^(\circ)+mTCB=360^(\circ)`

⇒
`mTCB=360-90`

⇒
`mTCB=270^(\circ)`

Thus, the measure of arcTCB is 270°, hence option C is correct.