Sin 9pi/4 Algebra -> Trigonometry-basics -> SOLUTION: Use the fact that the trigonometric functions are periodic to find the exact value of each expression. Do not use a calculator.

You can put this solution on YOUR website! How do I find the six trig functions of 9pi/2 *** 9π/2=rotating 2 revolutions counter-clockwise (4π)+π/2 which leaves you terminated at π/2

1) SIN 9PI/2 2) COSECANT 7PI-----This one is old, your need for it might have passed, but... 1) sin(9*PI/2) 2*PI is a complete revolution, so subtract that until the value is less than 2PI. sin(9PI/2) + sin([9PI/2 - 2PI -2PI]) = sin(PI/2) = 1. If it's easier to follow use degrees. 9PI/2 = 9*180/2 deg = 810 degs 810 - 360 = 450 450 - 360 = 90 ...

Algebra -> Trigonometry-basics-> SOLUTION: Find the exact value of the given trigonometric function.Do not use a calculator cos 9pi/4 I need to determine the angle that equals 9pi/4 when added to 2pi The answer is pi/4 Log On

You can put this solution on YOUR website! What is the complement and supplement of pi over 10? ** let c=complement

Question 588902: evaluate the trigonometric fun sin 9pi/ 4 using its period as an aid. Answer by Edwin McCravy(19970) ( Show Source ): You can put this solution on YOUR website!

Question 461795: Find each exact value. Do not use a calculator. 1) tan 9pi over 4. Use a calculator to approximate each value to four decimal places.

2) tan 9pi/2= 3) cot 13pi/3= .. The problem here is to find the reference angle and the quadrant it is in. The reference angle is the angle the terminal side makes with the x-axis. 1) Sec 240 degrees:Starting from the initial side, rotate counter-clockwise 180 deg, then another 60 deg. The reference angle is 60 deg located in quadrant III.

Question 904786: what ordered pair lies on the unit circle corresponding to 9pi/4 Answer by jim_thompson5910(35256) ( Show Source ): You can put this solution on YOUR website!

9pi/pi = pi*r^2/pi 9 = r^2 r^2 = 9 r = sqrt(9) r = 3 The radius is 3 feet ...