Math, asked by suurrraaaajjjjj, 9 months ago

1) sin 25° cos 65° + cos 25° sin 65°

Answers

Answered by Stylishguyss

3

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]

Answered by phytoufik

2

Answer:

1

Step-by-step explanation:

sin25cos65+cos25sin65

sin25sin25+cos25cos25

sin^2 25+Cos^2 25

=1

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