Mathematics: Precalc see attachment will mark brainliest

Precalc see attachment will mark brainliest

Ответ:

mttttttthhhhhhh551

02.01.2022

Mathematics

cos (5π/14)

Step-by-step explanation:

The given expression is:

$sin (\frac{\pi }{2})cos( \frac{\pi }{7})+cos (\frac{\pi }{2})sin( \frac{\pi }{7})$

The expression can be reduced by using the trigonometric identities

The suitable identity is:

cos (A - B) = cos A cos B + sin A sin B

Here A = π/2

B = π/7

Therefore,

$sin (\frac{\pi }{2})cos( \frac{\pi }{7})+cos (\frac{\pi }{2})sin( \frac{\pi }{7}) = cos(\frac{\pi }{2} -\frac{\pi }{7} ) = cos(\frac{7\pi -2\pi }{14} ) = cos\ \frac{5\pi }{14}$

0,0(0 оценок)

Precalc see attachment will mark brainliest

Ответ:

Ответ:

Ask your question to the AI advisor

More tips

Answers on questions: Mathematics

Ask an AI advisor a question