Tan x = sin x / cos x , therefore tan (90-a) = ? . (all angle measurements are in degrees)
choices are below:
a. 1/tan(90-a)
b. 1/sin a
c. 1/cos(90-a)
d. 1/tan a

Determine the difference: 3.2 × 1010 – 1.1 × 1010. write your answer in scientific notation.

Merrida uses a pattern in the multiplication table below to find ratios that are equivalent to 7: 9. if merrida multiplies the first term, 7, by a factor of 6, what should she do to find the other term for the equivalent ratio? multiply 9 by 1. multiply 9 by 6. multiply 9 by 7. multiply 9 by 9.

With number 11 ( show how you got the answer)