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given a is equal to 60 degree and b is equal to 30 degree prove that sin a + b is equal to sin a cos b + cos a sin b

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given a is equal to 60 degree and b is equal to 30 degree prove that sin a + b is equal to sin a cos...

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given a is equal to 60 degree and b is equal to 30 degree prove that sin a + b is equal to sin a cos b + cos a sin b ​

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given a is equal to 60 degree and b is equal to 30 degree prove that sin a + b is equal to sin a cos b + cos a sin b