Question

Write the principal value of 1 1 1 tan (1) cos 2 − + − ⎛⎜ − ⎞

Answer 1

${ { { { { { { { { { { { { { { \frac{ \frac{ { { \frac{ {1 \times \frac{1}{1} \times \frac{1}{1} \times \frac{1111111111}{1} }^{2} }{1111} \times \frac{1}{11} \times \frac{1}{1} \times \frac{11111}{1} \times \frac{11}{1} }^{2} }^{1} \times \frac{11}{1} }{1111111} \times \frac{1}{1} }{1} }^{1} }^{1} }^{1} }^{1} }^{111} }^{1} }^{11144675546} }^{1} }^{1} }^{1} }^{?} }^{1} }^{1} }^{1} }^{111 { {1 \times \frac{11}{?} \times \frac{?}{1} }^{2} }^{1} }$