Question

5. In an isosceles triangle if the non-equal angle is 45°, then calculate the
equal angles.
12
6. The acute angles of a right-angled triangle are in the ratio 8:7, then
calculate the acute angles.
13


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Answer 1

Answer:

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Answer 2

Step-by-step explanation:

5. let equal angles be x.

sum of all sides of a triangle = 180°

therefore, equal angles = 45-180

= 135°

the angles are =135/2

=67.5°

6. let angles be x

GIVEN : 8x+7x= 90°

15x=90

x=90/15

x= 6

the two angles are = 8×6 and 7×6

= 48 and 42

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