Question

cos (π+theta) =__________​

Answer 1

Answer:

cos(π + θ) = -cosθ, tan(π + θ) = +tanθ, cot(π + θ) = +cotθ. Connecting the M that is in the 3rd Quadrant to O and extending it to cross the tangent and cotangent axes, it crosses them in their positive region, and hence, both are positive for angle π + θ.

Answer 2

Answer:

cos(π+theta)

cos(180°+Q)

-sinQ