cospi/7+cos2pi/7+cos3pi/7+cos4pi/7+cosfrac{5pi}{7}+cosfrac{6pi}{7}=-এর সমাধান করুন

$$\cos \frac { \pi } { 7 } + \cos \frac { 2 \pi } { 7 } + \cos \frac { 3 \pi } { 7 } + \cos \frac { 4 \pi } { 7 } + \cos \frac { 5 \pi } { 7 } + \cos \frac { 6 \pi } { 7 } =$$

মূল্যায়ন করুন

$$0.00000000000000031$$

সমাধানের ধাপগুলো

Evaluate trigonometric functions in the problem

$$0.9009688679024191 + 0.6234898018587336 + 0.22252093395631445 + -0.22252093395631434 + -0.6234898018587335 + -0.900968867902419$$

1.5244586697611527 পেতে 0.9009688679024191 এবং 0.6234898018587336 যোগ করুন।

$$1.5244586697611527+0.22252093395631445-0.22252093395631434-0.6234898018587335-0.900968867902419$$

1.74697960371746715 পেতে 1.5244586697611527 এবং 0.22252093395631445 যোগ করুন।

$$1.74697960371746715-0.22252093395631434-0.6234898018587335-0.900968867902419$$

1.52445866976115281 পেতে 1.74697960371746715 থেকে 0.22252093395631434 বাদ দিন।

$$1.52445866976115281-0.6234898018587335-0.900968867902419$$

0.90096886790241931 পেতে 1.52445866976115281 থেকে 0.6234898018587335 বাদ দিন।

$$0.90096886790241931-0.900968867902419$$

0.00000000000000031 পেতে 0.90096886790241931 থেকে 0.900968867902419 বাদ দিন।

$$0.00000000000000031$$

ভাঙা

$$\frac{31}{2 ^ {17} \cdot 5 ^ {17}} = 3.1 \times 10^{-16}$$