Practice problem
Verify 1sec2x=1−1csc2x\frac{1}{\sec^2x}=1-\frac{1}{\csc^2x}sec2x1=1−csc2x1
sin^2(x)+cos^2(x)= 1
1=sec^2(x)-csc^2(x)
sec^2(x)=1-csc^2(x)
Type a concept, like “slope” or “photosynthesis”.