Math, asked by inforajashree, 9 months ago

Please explain the marked part of the sum (trigonometry ---> sums and products) given in the attachment. Please answer this fast. It's urgent. Tomorrow is exam. Please don't spam it.

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Answered by rishu6845
1

Answer:

plzzz give me brainliest ans and plzzzz follow me please

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Answered by nalinsingh
2

Answer:

Step-by-step explanation:

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