Question

[4] सिद्ध कीजिए कि cos60°. Cos30° - Sin60°.Sin30° का मान शून्य होगा ।
[5] k के मान ज्ञात कीजिए जिनके लिए समीकरण निकायkx+2y = 5,3x+y =1 व​

Answer 1

Answer:

4)ans- 0

5)ans- no solution

Step-by-step explanation:

4)ans- cos60=sin 30;

cos30=sin 60;

cos60°. Cos30° - Sin60°.Sin30

sin60 .sin30 -Sin60°.Sin30= 0 H.P.

5)ans- for given question equation is to and variable is 3 so by this we not find the value of k because by 2 equation the solution of k is existing infinite so by this we required 3 equation for bound the value of k.