3 years ago

Is 15º an acute angle, right angle, obtuse angle, or straight angle? flant role

Mathematics

1 answer:

White raven [17]3 years ago

8 0

Answer:

acute angle

Step-by-step explanation:

right is 90 degrees

obtuse is greater than 90 degrees

acuta is less than 90 degrees

straight is 180 degrees

so acute.

Brainliest appreciated

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A bag contains 4 purple beads and 3 green beads. A bead is drawn and then replaced before drawing the second bead. Find the prob

slega [8]

Answer:

9/49

Step-by-step explanation:

4 purple beads and 3 green beads. = 7 beads

P(green) = green / total = 3/7

It is replaced

4 purple beads and 3 green beads. = 7 beads

P(green) = green / total = 3/7

P( green ,replaced, green) = 3/7 * 3/7 = 9/49

4 0

3 years ago

△ABC is inscribed in a circle. Find the angle between the tangents to the circle at points B and C, if m∠CAB=50°.

Daniel [21]

$DB,DC \: are \: tangents \: to \: (O) \: at \: B,C\\\Rightarrow DB\perp OB \: at \: B, DC\perp OC \: at \: C\Rightarrow \widehat{DBO}=\widehat{DCO}=90° \\ \widehat{BOC}=2\widehat{BAC}=2\times 50°=100°\\\widehat{BDC}=360°-\widehat{BOC}-\widehat{DBO}-\widehat{DCO}=360°-100°-90°-90°=80°$