Mathematics, 18.04.2020 23:32 corcoranrobert1959

Angles A and B are located in the first quadrant such that sinA=7/25 and cosB=5/13. Determine the exact value for cos (a-b).
I know this includes having to use compound angle formulas but in don't know where to go with this.

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Angles A and B are located in the first quadrant such that sinA=7/25 and cosB=5/13. Determine the ex...

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Angles A and B are located in the first quadrant such that sinA=7/25 and cosB=5/13. Determine the exact value for cos (a-b). I know this includes having to use compound angle formulas but in don't know where to go with this.

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Angles A and B are located in the first quadrant such that sinA=7/25 and cosB=5/13. Determine the exact value for cos (a-b).
I know this includes having to use compound angle formulas but in don't know where to go with this.