Posted by billy on Monday, April 14, 2008 at 11:37am.
give the exact real number value without using a calculator
sin[(cos^1)(1/4)]
sin[(tan^1)(3/4)+(tan^1)(12/5)]

trig  bobpursley, Monday, April 14, 2008 at 11:42am
On each of these, draw the triangle. On the first, the adjacent side is 1, the hyp is 4, so the opposite side is sqrt(161) So sine of that angle is sqrt15/4
Same idea on the next.
Answer This Question
Related Questions
 MathsSs triG  Consider sin(x360)sin(90x)tan(x)/cos(90+x) 1.A.SIMPLIFY sin(x...
 Trig  Given: cos u = 3/5; 0 < u < pi/2 cos v = 5/13; 3pi/2 < v < ...
 Math Trig  1. Determine the exact value of cos^1 (pi/2). Give number and ...
 math  Use the exact values of the sin, cos and tan of pi/3 and pi/6, and the ...
 math  Use the exact values of the sin, cos and tan of pi/3 and pi/6, and the ...
 math  use exact values of the sin,cos and tan of (pi/3) and (pi/6)(which I have...
 precalculus  For each of the following determine whether or not it is an ...
 easy trig  If sin(theta)=[sqrt(70)]/7 and theta is in Quadrant two, find the ...
 simple trig  If sin(theta)=[sqrt(70)]/7 and theta is in Quadrant two, find the ...
 Mathematics  Trigonometric Identities  Let y represent theta Prove: 1 + 1/tan^...
More Related Questions