Express the following in terms of trigonometric ratio of acute angles 1- SIN 150 Express the following in terms of trigonometric ratio of acute angles 1- SIN 150°=sin 30° 2-COS 330°=cos 30°
Ans=LHS=sin^2(π/6)+cos^2(π/6)-tan^2(π/4) Sin(√3/2)^2+cos(1/2)^2-tan(1)^2 3/4+1/4 Ans=LHS=sin^2(π/6)+cos^2(π/6)-tan^2(π/4) Sin(√3/2)^2+cos(1/2)^2-tan(1)^2 3/4+1/4-1=3-1/4 -1=2/4-1 1/2-1=1-2/2=-1/2
Question 1 (**+) Solve the following trigonometric equation in the range given. Question 1 (**+) Solve the following trigonometric equation in the range given. cos(2 25) 0.454 θ + ° = − , 0 360 ≤ < θ . C2G , θ ≈ 46, 109, 226, 289