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In DeltaABC, angleA=x+15^(@),angleB=x an...

In `DeltaABC, angleA=x+15^(@),angleB=x and angleC=2x-35^(@)` find, each angle of the triangle.

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To find the angles of triangle ABC where angle A = x + 15°, angle B = x°, and angle C = 2x - 35°, we can follow these steps: ### Step-by-step Solution: 1. **Use the Angle Sum Property of a Triangle**: The sum of the angles in a triangle is always 180°. Therefore, we can write the equation: \[ \text{Angle A} + \text{Angle B} + \text{Angle C} = 180° \] Substituting the expressions for the angles, we have: \[ (x + 15) + x + (2x - 35) = 180 \] 2. **Combine Like Terms**: Simplifying the left side of the equation: \[ x + 15 + x + 2x - 35 = 180 \] This simplifies to: \[ 4x - 20 = 180 \] 3. **Isolate x**: To solve for x, first add 20 to both sides: \[ 4x = 180 + 20 \] \[ 4x = 200 \] Now, divide both sides by 4: \[ x = \frac{200}{4} = 50 \] 4. **Calculate Each Angle**: Now that we have the value of x, we can find each angle: - **Angle A**: \[ \text{Angle A} = x + 15 = 50 + 15 = 65° \] - **Angle B**: \[ \text{Angle B} = x = 50° \] - **Angle C**: \[ \text{Angle C} = 2x - 35 = 2(50) - 35 = 100 - 35 = 65° \] 5. **Final Angles**: Therefore, the angles of triangle ABC are: - Angle A = 65° - Angle B = 50° - Angle C = 65° ### Summary: - Angle A = 65° - Angle B = 50° - Angle C = 65°
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NAGEEN PRAKASHAN ENGLISH-LINES AND ANGLES-Exercise 6 C
  1. Angles of a triangle are (3x)^(@),(2x-7) and (4x-11)^(@) . Find the me...

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  2. Prove that measure of each angle of an equilateral triangle is 60^0...

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  3. Find the x and y from the adjooining figure.

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  4. In a DeltaABC, angleA=2 angleB=3 angleC, find each of the triangle.

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  5. In DeltaABC, angleA=x+15^(@),angleB=x and angleC=2x-35^(@) find, each ...

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  6. In DeltaABC, bisectors of angleB and angleC interesct each other at po...

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  7. An angle of a triangle mesures 68^(@) and the other two angles differ ...

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  8. Find the value of x form the adjoining diagram.

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  9. In DeltaABC sides AB and C are produced to D and E respectively. Bisec...

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  10. In triangle ABC,the bisector of interior angle A and the bisector angl...

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  11. From the adjoining figure prove that angleA+angleB+angleC+angleD+angle...

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  12. The side BC of DeltaABC is product to N. bisector of angle meets BC at...

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  13. Bisectors of angles A and B of a parallelogram ABCD meet at point M. P...

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  14. Prove that bisectors of any two adjacent angles of a rhombus form a ri...

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  15. Triangle ABC is right angles at B. Internet bisectors of acute angles ...

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  16. Bisectors of angles A and D of a quadrilateral ABCD meet at P. Prove t...

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  17. In the given figure, AD is altitude and AE is bisector of angle BAC of...

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  18. In DeltaABC, angleA-angleB=16^(@) and angleC-angleA=34^(@)=34^(@) , fi...

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  19. In a right angled triangle ABC, angleB=90^(@), p is a point on BA prod...

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  20. In the adjoining figure, AB||CD. If the angleBAE=25^(@) and angleCDE=...

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