Pertanyaan 1Pilihan gandaIf tan A = 1/2 and A is in the third quadrant, what is the value of sin A cos A?5-3/23-2/5
Pertanyaan 2Pilihan gandaGiven α – β = π/4 and sin α sin β = 1/4, with α and β being acute angles, what is cos(α+β)?1/413/40
Pertanyaan 3Pilihan gandaGiven sin α cos β = 1/5 and sin(α-β) = 1/5, what is the value of sin(α+β)?-1/53/51/52/5
Pertanyaan 4Pilihan gandaWhat is the solution set for the equation cos 4x + 3 sin 2x = -1 for 0 ≤ x ≤ 180°?120°, 150°30°, 160°15°, 105°30°, 150°
Pertanyaan 6Pilihan gandaGiven a right triangle at Q with acute angles P and R, and sin R = 8/17, what is cos(P-R)?-240/289161/289-161/260-17/8
Pertanyaan 7Pilihan gandaWhat is the result of cos 7.5° cos 37.5° - sin 7.5° sin 37.5°?2√6/5-2√6/52√6/5-1
Pertanyaan 8Pilihan gandaEvaluate the trigonometric expression: 2 cos 23.5° cos 21.5° – 2 sin 23.5° sin 21.5°.21√21 + √2
Pertanyaan 9Pilihan gandaIf cos a = 3/5 and cos b = -4/5 with a being acute and b obtuse, find cos(a+b) – cos(a-b).12/7-3/73/7-12/7