The value of sin (180+x) is equivalent to
a)-sinx
b)-sin (90-x)
c)sinx
d)sin (90-x)

if sec (a+15) =csc (2a) find the smallest positive value of a in degrees.

and q38

See attachment below and find the equivalent of tan(∠qsr)

What is the distance between a and b? round your answer to the nearest tenth. a coordinate plane is shown. point a is located at negative 1, 5, and point b is located at 4, 1. a line segment connects the two points.

The given diagram shows the parts of a right triangle with an altitude to the hypotenuse. using the two given  measures, find the other four.