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W.S_IMP_ Double+Half Angle Identities

# W.S_IMP_ Double+Half Angle Identities - Kuta Software...

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Kuta Software - Infinite Algebra 2 Name___________________________________ Period____ Date________________ Double- and Half-Angle Identities Use a double-angle identity to find the exact value of each expression. 1) sin 120 ° 2) tan 60 ° 3) cos 4 π 3 4) sin 5 π 3 Use a half-angle identity to find the exact value of each expression. 5) tan 45 ° 6) sin 165 ° 7) sin 5 π 6 8) cos 30 ° Use a double-angle or half-angle identity to find the exact value of each expression. 9) cot π 3 10) cot 2 π 3 11) sec 5 π 12 12) cot 60 ° 13) cot 240 ° 14) cot 5 π 3

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15) sin θ = - 7 25 and 270 ° < θ < 360 ° Find cos θ 2 16) cos θ = 1 3 and 0 ° < θ < 90 ° Find sin 2 θ 17) cos θ = 4 5 and 270 ° < θ < 360 ° Find sin 2 θ 18) cos θ = 2 5 5 and 0 ° < θ < 90 ° Find sin θ 2 19) cos θ = - 4 5 and 90 ° < θ < 180 ° Find sin θ 2 20) cos θ = - 15 17 and 180 ° < θ < 270 ° Find tan θ 2 21) tan θ = - 7 24 and 3 π 2 < θ < 2 π Find cot θ 2 22) cot θ = 4 3 and π < θ < 3 π 2 Find sin 2 θ 23) cot θ = 4 3 and π < θ < 3 π 2 Find cot 2 θ 24) tan θ = 2 and 0 < θ < π 2 Find sin θ 2 25) sin θ = - 3 5 and 3 π 2 < θ < 2 π Find tan θ 2 26) cot θ = - 3 91 91 and 3 π 2 < θ < 2 π Find sin
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