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নিচের তথ্যগুলো লক্ষ্য কর:(i) 2sinAsinB= cos(A - B) + cos(A + B)(ii) cos C - cos D = 2sinc + D2 sinD - C2(iii) cos 70∘ - cos 10∘ + sin 40∘ = 0নিচের কোনটি সঠিক?
Find the ∫∫x3 y3 sin⁡(x)sin⁡(y) dxdy. ]) b) (-x3 Cos(x) – 3x2 Sin(x) – 6xCos(x)-6Sin(x))(-y3 Cos(y) + 3]) c) (-x3 Cos(x) + 3x2 Sin(x) + 6xCos(x)-6Sin(x))(-y3 Cos(y) + 3y2 Sin(y) + 6yCos(y) – 6Sin(y)) d) (–x3 Cos(x) + 6xCos(x) – 6Sin(x))(-y3 Cos(y))
What is the value of $$\frac{{32{{\cos }^6}x - 48{{\cos }^4}x + 18{{\cos }^2}x - 1}}{{4\sin x\,\cos x\,\sin \left( {60 - x} \right)\cos \left( {60 - x} \right)\sin \left( {60 + x} \right)\cos \left( {60 + x} \right)}}?$$
Evaluate the following:
$$\frac{{\cos 2\theta \cdot \cos 3\theta - \cos 2\theta \cdot \cos 7\theta + \cos \theta \cdot \cos 10\theta }}{{\sin 4\theta \cdot \sin 3\theta - \sin 2\theta \cdot \sin 5\theta + \sin 4\theta \cdot \sin 7\theta }}$$
cos-1x েএর সাপেক্ষে sin(cos-1x) এর অন্তরক সহগ
cos-1x এর সাপেক্ষে sin(cos-1x) এর অন্তরক সহগ-
What is the value of cos 46° cos 47° cos 48° cos 49° cos 50° ….
What is the value of {[sin (x + y) – 2 sin x + sin (x – y)]/[cos (x – y) + cos (x + y) – 2 cos x]} × [(sin 10x – sin 8x)/(cos 10x + cos 8x)]?
cos 3x-এর n তম অন্তরক সহগ হবে:
sin-1(cos x) এর অন্তরক সহগ কোনটি?