The reciprocal of 1/10 is 10/1 or 10. For 16 it is 1/16. To make it easier you just flip or switch the denominator and numerator. Hope I was helpful.
The answer would be 361/4 added to each side of the formula
Answer:
Step-by-step explanation:
hello,
for 

so here

to have two complex solutions we need 
so 

for instance we can take b = 0
hope this helps
√180 = √(2 x 2 x 3 x 3 x 5) = 6√5
I am not sure what the question is but here is how you use trig functions:
sine of the angle = side opposite the angle ÷ hypotenuse
cosine of the angle = side adjacent to the angle ÷ hypotenuse
tangent of the angle = side opposite the angle ÷ side adjacent to the angle