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Q7.

(a) Find $x + y + z$

Answers (1)

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(a) Find $x + y + z$

$z+30\degree=180\degree$

$z=150\degree$

$x+90\degree=180\degree$

$x=90\degree$

The sum of all angles of the triangle is $180\degree$

The unmarked angle of the triangle is A.

$A+90\degree+30\degree=180\degree$

$A=180\degree-120\degree$

$A=60\degree$

$A+y=180\degree$

$60\degree+y=180\degree$

$y=180\degree - 60\degree$

$y=120\degree$

$x + y + z$ = $90\degree+120\degree+150\degree$

$x + y + z$ = $360\degree$

Posted by

seema garhwal

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