Menu Close

Question-157965




Question Number 157965 by Tawa11 last updated on 30/Oct/21
Commented by Tawa11 last updated on 30/Oct/21
Find the sum of the two shaded angles.
$$\mathrm{Find}\:\mathrm{the}\:\mathrm{sum}\:\mathrm{of}\:\mathrm{the}\:\mathrm{two}\:\mathrm{shaded}\:\mathrm{angles}. \\ $$
Answered by mr W last updated on 31/Oct/21
Commented by Tawa11 last updated on 31/Oct/21
God bless you sir. I appreciate.
$$\mathrm{God}\:\mathrm{bless}\:\mathrm{you}\:\mathrm{sir}.\:\mathrm{I}\:\mathrm{appreciate}. \\ $$
Commented by mr W last updated on 31/Oct/21
blue angles are related to the yellow  circle.  now look at the green angles which  are related to the black circle. we  have (β+γ)=2γ.  it follows β=γ.  sum of shaded angles =α+γ       =α+β=45°
$${blue}\:{angles}\:{are}\:{related}\:{to}\:{the}\:{yellow} \\ $$$${circle}. \\ $$$${now}\:{look}\:{at}\:{the}\:{green}\:{angles}\:{which} \\ $$$${are}\:{related}\:{to}\:{the}\:{black}\:{circle}.\:{we} \\ $$$${have}\:\left(\beta+\gamma\right)=\mathrm{2}\gamma. \\ $$$${it}\:{follows}\:\beta=\gamma. \\ $$$${sum}\:{of}\:{shaded}\:{angles}\:=\alpha+\gamma \\ $$$$\:\:\:\:\:=\alpha+\beta=\mathrm{45}° \\ $$
Commented by mr W last updated on 31/Oct/21
answer correct as in book?
$${answer}\:{correct}\:{as}\:{in}\:{book}? \\ $$
Commented by Tawa11 last updated on 02/Nov/21
No answer there sir. I just follow your steps
$$\mathrm{No}\:\mathrm{answer}\:\mathrm{there}\:\mathrm{sir}.\:\mathrm{I}\:\mathrm{just}\:\mathrm{follow}\:\mathrm{your}\:\mathrm{steps} \\ $$

Leave a Reply

Your email address will not be published. Required fields are marked *