17. If ABCD be a cyclic quadrilater...
Question
Fullscreen

17. If ABCD be a cyclic quadrilateral, then what will be the value of ZA? ТВ 3K oak (1) 90° (3) 110° (2) 80° (4) 120°

11th - 12th Class
Maths
Solution
190
Rating
4.0 (1 ratings)
Fullscreen
( A B C D ) is a cyclic quadritateral HS sum of all interier angles of a triangle add up to ( 180^{circ} ) [ begin{array}{c} therefore 2 K+3 K+5 K=180^{circ} 10 K=180^{circ} K=18^{circ} end{array} ] In a cyclic quadribateral opposite interior angles are prappor supplementaly [ begin{aligned} therefore & angle A+angle C=180 & angle A+5 K=180 end{aligned} ] ( angle A+90=180 cdotleft(K=18^{circ}right) ) ( angle angle A=90^{circ} )
Quick and Stepwise Solutions Just click and Send Download App OVER 20 LAKH QUESTIONS ANSWERED Download App for Free