Question

evaluate sin 25 degree into cos 65 degree + cos 25 degree into sin 65 degree​

Answer 1

Answer:

Sin 25° cos 65° + cos 25° sin 65°

= sin 25° cos (90-25) + cos 25° sin(90-25)

= sin 25° sin 25° + cos 25° cos 25°

= sin²25° + cos²25°

= 1 [sin²A+cos²A = 1]

Answer 2

Answer:

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