Math, asked by dakshdude391, 7 months ago

sin (25 - a)-cos (65 +a)

Answers

Answered by abcdefgh18

1

Answer:

0

Step-by-step explanation:

sin(25-a) - cos(65+a)

= sin [(90-65)-a] - cos(65+a)

= sin[90-(65+a)] - cos(65+a)

= cos(65+a) - cos(65+a)

= 0

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