⛸️ Sin A 4 5 Cos B 5 13

A 4／ 5 , sin. B=12／ 13, ∴cos. C=– 3／ 5 × 5／ 13 + 4／ 5 × 12／ 13=33／ 65. Dedekind abc abc abba a00aa aa0 abc abc; 1 ABC 2 ABC 3 ABC 4 ABC; Calculus Lesson 7 System Derivative ABC ABC ABC; ABC Costing QU ES ABC El ABC fue; ABC analysis What is ABC analysis n ABC; ABC analysis What is ABC analysis n ABC. 诱导公式口诀奇变偶不变，符号看象限”意义：. k×π/2±a (k∈z)的三角函数值. （1）当k为偶数时，等于α的同名三角函数值，前面加上一个把α看作锐角时原三角函数值的符号；. （2）当k为奇数时，等于α的异名三角函数值，前面加上一个把α看作锐角时原三角 Given:cos−1( 5 13)+cos−1(3 5) = cos−1(x)Taking cosine on both sides,cos(cos−1( 5 13)+cos−1(3 5))= cos(cos−1(x))Concepts used:cos(A+B) =cos(A)cos(B)−sin(A)sin(B)cos−1( 5 13)= sin−1(12 13) and,cos−1(3 5)= sin−1(4 5)x = 5 13× 3 5− 12 13× 4 5x = 15−48 65x = −33 65. Tabelsin cos tan adalah hal yang harus Anda cari. Sebenarnya fungsi dari trigonometri sendiri juga hampir sama dengan sin cos tan yakni untuk membantu Anda. Ketika menghitung perhitungan dari sudut sebuah bangun, utamanya [] Tabel sin cos tan lengkap pada sudut istimewa beserta sudut satu lingkaran penuh. 13° 0.22495: 0.97437: 0.23087 Ingatingat saja sudut yang lebih besar diantara kedua sudut itu adalah 53°, dan yang kecil 37° serta panjang AC = 5 m (gunakan aturan Pythagoras). Tinggal gunakan definisi sin, cos dan tan untuk mencari nilainya. Ingat dari pengertian sinus cosinus dan tangen dengan jembatan keledai berikut: sin - de - mi. cos - sa - mi. tan - de - sa therefore cos60 = x / 13 therefore, x = 13 × cos60 = 6.5 therefore the length of side x is 6.5cm. The Graphs of Sin, Cos and Tan - (HIGHER TIER) The following graphs show the value of sinø, cosø and tanø against ø (ø represents an angle). From the sin graph we can see that sinø = 0 when ø = 0 degrees, 180 degrees and 360 degrees. Class12 Maths NCERT Solutions. Class 8 Science NCERT Solutions. Class 9 Science NCERT Solutions. Class 10 Science NCERT Solutions. Englishtan. NCERT Books. Class 10 Maths - Basic vs Standard. CBSE Sample Papers. sin stands for sine.cos stands for cosine. cosine is the co-function of sine, which is why it is called that way (there's a 'co' written in front of 'sine').Co-functions have the relationship sin@ = cos(90-@) However, the trig function csc stands for cosecant which is completely different from cosine.As you might have noticed, cosecant has a 'co' written in front of ''secant'. sec( A) = ฉาก/ชิด = h / b. cot ( A) = ชิด/ข้าม = b / a. sin (θ) คือ ความยาว AC (ครึ่งหนึ่งของคอร์ด) นิยามนี้เริ่มใช้โดยชาว อินเดีย. cos (θ) คือระยะทางตามแนวนอน OC . Given as sin A = 4/5 and cos B = 5/13 As we know that cos A = √1 – sin2 A and sin B = √1 – cos2 B, where 0 < A, B < π/2 Therefore let us find the value of sin A and cos B cos A = √1 – sin2 A = √1 – 4/52 = √1 – 16/25 = √25 – 16/25 = √9/25 = 3/5 sin B = √1 – cos2 B = √1 – 5/132 = √1 – 25/169 = √169 – 25/169 = √144/169 = 12/13 i sin A + B As we know that sin A +B = sin A cos B + cos A sin B Therefore, sin A + B = sin A cos B + cos A sin B = 4/5 × 5/13 + 3/5 × 12/13 = 20/65 + 36/65 = 20 + 36/65 = 56/65 ii cos A + B As we know that cos A +B = cos A cos B – sin A sin B Therefore, cos A + B = cos A cos B – sin A sin B = 3/5 × 5/13 – 4/5 × 12/13 = 15/65 – 48/65 = -33/65 iii sin A – B As we know that sin A – B = sin A cos B – cos A sin B Therefore, sin A – B = sin A cos B – cos A sin B = 4/5 × 5/13 – 3/5 × 12/13 = 20/65 – 36/65 = -16/65 iv cos A – B As we know that cos A - B = cos A cos B + sin A sin B Therefore, cos A - B = cos A cos B + sin A sin B = 3/5 × 5/13 + 4/5 × 12/13 = 15/65 + 48/65 = 63/65 $\begingroup$I've used the angle sum identity to end up with $\cos A \cos B -\sin A \sin B = \frac{5}{13} = \frac{3}{5}\cos B -\frac{4}{5} \sin B$, but don't know how to proceed from here. Any tips? asked Aug 10, 2017 at 1020 $\endgroup$ 1 $\begingroup$Hint $\cos B=\cosA+B-A$ use the compound angle formula answered Aug 10, 2017 at 1029 David QuinnDavid gold badges19 silver badges48 bronze badges $\endgroup$ $\begingroup$ $$A=\arcsin\dfrac45=\arccos\dfrac35$$ $$A+B=\arccos\dfrac5{13}=\arcsin\dfrac{12}{13}$$ $$B=\arccos\dfrac5{13}-\arccos\dfrac35$$ answered Aug 10, 2017 at 1056 $\endgroup$ You must log in to answer this question. Not the answer you're looking for? Browse other questions tagged . >>Class 11>>Maths>>Trigonometric Functions>>Trigonometric Functions of Sum and Difference of Two angles>>If cos A = 4/5 , cos B = 12/13 , 3pi/Open in AppUpdated on 2022-09-05SolutionVerified by TopprA and B both lie in the IV quadrant.=> are negativei iiSolve any question of Trigonometric Functions with-Was this answer helpful? 00More From ChapterLearn with Videos Practice more questions

sin a 4 5 cos b 5 13