Question

Find the value of x​

Answer 1

Answer:

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Step-by-step explanation:

in the given figure,

4x + x = 90°

5x = 90°

Therefore,

x = 90/5

x = 18

Therefore,

4x = 4 × 18 = 72

Answer 2

Answer:

Given

• 90° + X° + 4X° = 180°

To find

• The value of X

Solution

90° + X° + 4X° = 180° [straight angle]

➳90° + 5X° = 180°

➳5X° = 180° - 90°

➳5x = 90°

$\rm \: ➳x = \frac{90}{5}$

$\bf \: x = 18°$

• Therefore the value of X is 18°

The value of 4X is:

4 × 18°

72°

___________________

Verification:

➳90° + X° + 4X° = 180

➳90° + 5X° = 180°

➳90° + 5 × (18)° = 180°

➳90° + 90° = 180°

➳180° = 180°