The functions tan and cot can be expressed in terms of sin and cos as well using the sin, cos, and tan formulas. Thus, we can derive 3 more formulas related to sin, cos, and tan. We know that sin, cos, and tan are the reciprocals of cosec (or csc), sec, and cot functions. We can derive some other sin cos tan formulas using these definitions of sin, cos, and tan functions.
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