Using what you know of the tangent function, show that −tan(theta°) = tan(−theta°) for theta ≠ 90 + 180k, for all
integers k.

Afactory buys 10% of its components from suppliers b and the rest from supplier c. it is known that 6% of the components it buys are faulty. of the components brought from suppliers a,9% are faulty and of the components bought from suppliers b, 3% are faulty. find the percentage of components bought from supplier c that are faulty.