Trig

Given that sin of theta= 2/5 and 0 degrees<theta<90 degrees, what is the exact value of csc of theta

A) 5/2

Given that sin of theta= 1/4, 0<theta<pi/2, what is the exact value of cos of theta?

B) Square Root 15/4

Express cos 7pi/3 as a trigonometric function of an angle in Quadrant I

B) cos pi/3

Simplify the expression sec(x)/tan(x)

B) csc(x)

Simplify the expression csc of theta/cot of theta

B) sec of theta

Given cos of theta= 4/7 and csc of theta<0 find sin of theta and tan of theta

C) Sin of theta= -square root 33/7 Tan of theta= -square root 33/4

Given cos of theta= 4/9 and csc of theta <0, find sin of theta and tan of theta

D) sin of theta=-square root 65/9 tan of theta=-square root 65/4

Express cos 27pi/8 as a trigonometric function of an angle in Quadrant I.

NOT D) cos 3pi/8

Use the given information to determine the exact trigonometric value sin of theta= -1/5, pi<theta<3pi/2, cos of theta

NOT C) -3square root 6/5

A counterexample for the expression sin(y)*tan(y)= cos(y) is 0 degrees

True