Question

Find the polynomial whose zeroes are (V3 + V5 ) and (V5 - V3)
If sin A =
find cos A.
the following questions
3
4​

Answer 1

Step-by-step explanation:

required polynomial

x²-[(v3+v5)+(v5-v3)]x+ (v3+v5)(v5-v3)

= x²-2v5x+(v5²-v3²)

since sin A = 3/4

=> cos A = √(4²-3²)/4

= √7/4

Hope this helps you