11. Use the fundamental identities to find the value of the trig function Find sin o...
11. Use trig identities to solve the trig equation exactly for Osts 21. cos2t = -sin (t + "/2)
41&43
In Problems 41-46, use the given information and appropriate identities to find the exact value of the indicated expression. 41. Find sin(x + y) if sin x = 1/3, cos y = -3/4, x is in quadrant II, and y is in quadrant III. 42. Find sin(x - y) if sin x = -2/5, sin y = 2/3, x is in quadrant IV, and y is in quadrant I. 43. Find cos(x - y) if tan x = -1/4,...
(7 pts) Use double angle identities to find the indicated value. 13) cos o = sin 0 <0 Find sin(20).
6) Use the fundamental identities to find the values of sin(a), tan(a), and sec(a) if cos (a) 3 and tan (a)>0 5 (8 pts)
use the info. given below to find sin(a-b)
cos a= 5/13, with a in quadrant IV
cos b= -5/13, with b in quadrant III
O TRIGONOMETRIC IDENTITIES AND EQUATIONS Sum and difference identities: Problem type 3 Use the information given below to find sin(a - b). COS 7 5 with a in quadrant IV 13 5 with B in quadrant III 13 cos B 1 Give the exact answer, not a decimal approximation. sin (a - b) = 0 8...
10 Find the trigonometric function value of angle e. 2 22) cos 0 = and o in quadrant IV 7 Find sin e 5 23) sin 0 -- and e in quadrant III Find sec .
Find the value of the other five trig ratios if sin 0 = - , with in Quadrant IV.Draw a picture of 0. csc 0= cos = sec 0= tan 0= cot 0=
Use the cosine of a sum and cosine of a difference identities to find cos (s + t) and cos (s-t). 4 5 sin s= - lo and sint = s in quadrant IV and t in quadrant II 13'
O TRIGONOMETRIC IDENTITIES AND EQUATIONS Double-angle identities: Problem type 1 3 Find sin 2x, cos 2x, and tan 2x if sinx and x terminates in quadrant III. 10 . 0/0 sin 2x = X5 ? cos 2x tan 2x L
Use the given information to find the exact value of the trigonometric function. cos O = , lies in quadrant IV Find cos UIN UN 10 10 3110 10