Question

if x is equals to 3 sin theta + 4 cos theta and Y question 3 cos theta minus 4 sin theta then prove that X square + Y square = 25 ​

Answer 1

Answer:

x=3sinA+4cosA

x²=9sin²A+16cos²A+24sinACosA

y=3cosA-4sinA

y²=9cos²A+16sin²A-24SinACosA

X²+Y²= 9(sin²A+cos²A)+16(sin²A+cos²A)

=9+16=25

Answer 2

Step-by-step explanation:

help:-):-):-):-):-):-)