Given the identity tanx =sinx/cosx and the relationship between the sine and cosine of complementary angles, what is tan (90 -a)?

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Which of the following is correct interpretation of the expression -4+13

Television sizes are based on the length of the diagonal of the television's rectangular screen. so, for example, a 70-inch television is a television having a diagonal screen length of 70 inches. if a 70 inch television's diagonal forms a 29°angle with the base of the screen, what is the vertical height (1) of the screen to the nearest inch? 70 inhin