ide the numerator and denominator by cos a cos ß. tan (x+3)= tan (x + ³) = cos a cos B cos a cos B wide each term in the numerator and denominator by cos a cos ß. = sin a cos a cos p + 1.1- COS α. cos a cos ß COS α. cos a cos ß 0-1+1.0 sin α cos a cos ß ... • tan B ▶►>>

Which expression does (sin x)(cos 2x) + (cos x)(sin 2x) simplify to?  cos 3x  −sin x  sin 3x  cos(−3x)

Use the cosine of a sum and cosine of a difference identities to find cos (s+t) and cos (st). sin s= 5 13 and sint = - 4 s in quadrant I and t in quadrant III 5 cos (s+t)= (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.) cos (st) = ☐ (Simplify your answer, including any radicals. Use integers or fractions for any numbers in the expression.)

Y= ____ (cos or sin) (____ x)