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Find the exact value of the expression. sin (30) sin(90°) - cos (30) cos(90°) = Find the exact value of the expression. sin( – 45° ) sin( - 30°) = [ Write each expression as a single trigonometric function. sin(7x)cos(3x) – cos(7:c )sin(32) = Write each expression as a single trigonometric function. cos(6.c )cos(3x) - sin(62) sin(30) = Write each expression as a single trigonometric function. cos(7x)cos (4:0) + sin(78) sin(4x) =
Find the expression that is equivalent to sin 70° cos 30° + cos 70° sin 30° Choose the correct answer below. O O O O cos 100° sin 100 cos 40° sin 40°
Write the expression as a function of 0, with no angle measure involved. cos (60°-o) cos (60° - 0) = (Simplify your answer, including any radicals. Use integers or fractions for any Enter your answer in the answer box.
Write the expression as a function of e, with no angle measure involved. cos (60°-o) cos (60° - 0) = (Simplify your answer, including any radicals. Use integers or fractions for any numbers Enter your answer in the answer box. Previous
Write the expression as a single function of a. cos (90° - a) Choose the correct function for cos (90° - «). O A. cos a OB. - sin a O c. sin a OD - COS a
Use sum-to-product identities to rewrite the expression as a product. cos 50° + cos 36° O A. 2 cos 43° cos 7° OB. 2 cos 43° sin 7° OC. 2 sin 43° cos 7° OD. - 2 sin 43° sin 7°
How to write an expression for magnitude s(w)? J.cos -ku] (cos-kt ) + COs CoS Exercise Derivn (4) Exercise 3 Use (9) to write an expression for Su)
please help!! Use an identity to write the expression as a single trigonometric function. + cos 1340 2 1 + cos 134 O = (Type an exact answer.) N
Use an identity to write the expression as a single trigonometric function. 1 - cos 86° sin 86° 1 o cos 86° sin 86° 11 (Simplify your answer.)
Write the given expression as an algebraic expression in x. cos(2 tan-1(x))