Question

sin 25 cos 65+ cos 25 sin65​

Answer 1

Answer:

sin 25 Cos (90-25) + cos 25 sin (90 - 25)

sin25 sin25 + cos 25 cos 25

sin^2 25 + cos^2 25

= 1 Ans...

Answer 2

Answer:

ur ans is 1

Step-by-step explanation:

we know that...

sin 25 = cos 65 ( sin A = cos 90-A)

similarly cos 25 = sin 65

now

cos 65 x cos65 + sin65 x sin 65

${sin}^{2} + {cos}^{2} = 1$

hope this will help you