WebQuestion If cos9α=sinα and 9α<90 0, then the value of tan5α is A 31 B 3 C 1 D 0 Hard Solution Verified by Toppr Correct option is C) cos(9α)=sin(α) sin(90 0−9α)=sin(α) For 0<90 0 90 0−9α=α 90 0=10α α=9 0 Now, tan5α =tan(5)(9 0) =tan45 0=1 Hence, option C. Video Explanation Solve any question of Introduction to Trigonometry with:- WebIN THIS VIDEO WE WILL LEARNsin 90° = 1 (why & how?)sin 90° = 1 (Why & How?) cos 0 =1 tan 90° = infinity/undefined I why sin 90 degree is equal to 1TRIGON...
Exam: 05.05 Right Triangles and Trigonometry Review and ... - Quizlet
WebSin 90 degrees = 1 The angles are calculated with respect to sin, cos and tan functions which are the primary functions, whereas cosecant, secant and cot functions are derived from the primary functions. Usually, the … Web9 aug. 2024 · sin 90° = cos 0° = 1 sin 30° = cos 60° = 1/2 sin 60° = cos 30° = √3/2 Calculation: Sin (A + B) = 1 ⇒ A + B = 90° ---- (sin 90° = 1) Let B = 30° ---- (0° < B < 45°) ⇒ A + 30° = 90° ⇒ A = 60° cos (A – B) = cos (60° - 30°) ⇒ cos 30° = √3/2 Now check options for A = 60° and B = 30°. 1) sin 2B = sin 2 × 30° ⇒ sin 60° = √3/2 ∴ option 1 satisfies. blue frog music video
Solve cos90+sin90= Microsoft Math Solver
Web24 jan. 2024 · One way to find Cos 90 is to find Sin 0 as Sin 0 = Cos 90. The value of both is 0. You can also use the right-angled triangle method in which Cos = … WebTrigonometry. Trigonometry (from Ancient Greek τρίγωνον (trígōnon) 'triangle', and μέτρον (métron) 'measure') is a branch of mathematics concerned with relationships … Web15 jul. 2024 · cos 90° = 1, because the angles are complements cos 180° = 1, because the angles are supplements cos 90° = 0, because the angles are complements cos 180° = 0, because the angles are supplements If the sin 0° = 0, then which statement is true? cos 90° = 1, because the angles are complements cos 180° = 1, because the angles are … freelife origin apk