3 years ago

Help me this need to be right

Mathematics

1 answer:

Alenkinab [10]3 years ago

3 0

It would actually be the last one alternate exterior angles is Your Answer

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Value of x........... in given rhombus.

Ann [662]

Step-by-step explanation:

we know that,

《opposite angle are equal in a rhombus 》

HERE,

one angle =2x

Opposite angle =3x-40

According to the question, 

$\tt{ 2x=3x-40 }$

$\tt{3x=2x+40 }$

$\tt{3x-2x=40 }$

$\tt{ x=40 }$

#quality answer

8 0

3 years ago

Read 2 more answers

Use the trigonometric subtraction formula for sine to verify this identity: sin((π / 2) – x) = cos x

KIM [24]

Answer:

Step-by-step explanation:

$sin (\frac{\pi}{2} - x) = cos x \\\\ sin (a - b) = sin a.cos b - sin b.cos a \\\\ sin (\frac{\pi}{2} - x) = sin \frac{\pi}{2}.cos x - sin x.cos \frac{\pi}{2} \\\\ sin \frac{\pi}{2} = 1; cos \frac{\pi}{2} = 0 \\\\ sin (\frac{\pi}{2} - x) = 1.cos x - sin x.0 \\\\ sin (\frac{\pi}{2} - x) = cos x$