If a is a Negative number greater than -1; b is a Positive number less than 1; and sin A = a, tan A = a/b, find cos(A

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answerhappygod
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If a is a Negative number greater than -1; b is a Positive number less than 1; and sin A = a, tan A = a/b, find cos(A

Post by answerhappygod »

If a is a Negative number greater than -1; b is a Positivenumber less than 1;
and
sin A = a, tan A = a/b,
find cos(A + k ) in terms of a and b, where k is an Evennumber.
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