Question

can someone please help me with this question? ​

Answer 1

Answer:

मोहन₹60,000,5% साधारण ब्याज दर पर निवेश करता है तथा एक और भागवह 10% दर पर निवेश करता है। यदि वर्ष के अन्त में कुल प्राप्त ब्याज राशि कुल मूलधन का 7% हो तो कुल निवेशित राशि बताइए। (a) ₹ 20000 (b) ₹ 15000 (c) ₹ 1,00,000 (d) ₹ 34000 ₹(₹

Answer 2

Given,

Angle ABC = 80°

OB is the angle bisector of angle ABC.

OC IS the angle bisector of angle ACB.

To prove,

Angle BOC = 100°

Proof,

This problem can be easily solved by following the given steps.

We know, the sum of the angles in a triangle is 180°.

Now,

Angle ABC = 80°

Angle bisector will bisect the angle into two halves.

Angle OBC = Angle ABC ÷ 2

Angle OBC = 80 ÷ 2

Angle OBC = 40°

OB and OC are angle bisectors of equal length.

Then, OBC is an isosceles triangle.

Angle OBC = Angle OCB = 40°

The sum of three angles of a triangle OBC is 180°.

Now,

Angle OBC + Angle OCB + Angle BOC = 180°

40 + 40 + Angle BOC = 180

80 + Angle BOC = 180

Angle BOC = 180 - 80

Angle BOC = 100°

(Angles are measured in degree. So, the angle here will also be in degree)

Hence, angle BOC = 100°