Question

1.) Change all expressions to sine and cosine. Then simplify. a.) sec^2x - (sec^2x/csc^2x) | b.) cscx/(sec^2x-1)cotx | c.) (1+cscx)/(cosx+cotx)

Answer 1

\[\sec^2(x)-\frac{\sec^2(x)}{\csc^2(x)} \\ \sec^2(x)(1-\frac{1}{\csc^2(x)})\]
write this in terms of sin and cos first