Question: Q 2. If sin( x + y ) = 0.92 and sin(x -y ) = 0.15, what is the value of cosxsiny rounded to the

Q 2. If sin( x + y ) = 0.92 and sin(x -y ) = 0.15, what is the value of cosxsiny rounded to the nearest hundredth? O 0.77 O 0.54 O 0.39 O 1.07 W Q 3. If sin( 36 ) cos B- cos( 3/ ] sing= 2sin( ap ] cos( ap ), then the value of a is 0 4 O 0.5 O O 8W Q 1. Prove the identity below. Show all steps of your reasoning to receive full credit. cos x - == =cosx + 2 -sinx B i U Font Family AAA DE EE . @ 5 0W Q 6. Use a sum or difference identity to find an exact value for cos 105. B i U Font Family[l O 4 Using the double angle identity, which of the following are equivalent to sin[%]? cos| L 14 .o 27 9 1- 2sin'[27\"] 25in[ == ) o cos'[ i | 2cos[14] 1 [J O s Which of the following are equivalent to cos31cos10sin31sin10? cos41 O sin41 O cos21 O sin21

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