(csc θ − sin θ)/(cos θ)
(1/sin- sin^2/sin)/cos
(1-sin^2)*sin/cos
cos^2*sin/cos
cos*sin
:(cos+1)/sin + sin/(1+cosu)
common denominaator:sin(1+cos)
1+2cos+cos^2 + sin^2 all over denominator
2(1+cos)/sin(1+cos)
2/sinU
check that.
Write the trigonometric expression in terms of sine and cosine, and then simplify.
1). (csc θ − sin θ)/(cos θ)
____________.
2). Simplify the trigonometric expression.
(cos u + 1)/(sin u) +
(sin u)/(1 + cos u)
______________.
2 answers
(csc θ − sin θ)/(cos θ)
= (1/sinθ - sinθ)/cosθ
= (1-sin^2θ)/(sinθ cosθ)
= cos^2θ/(sinθ cosθ)
= cosθ/sinθ
= cotθ
= (1/sinθ - sinθ)/cosθ
= (1-sin^2θ)/(sinθ cosθ)
= cos^2θ/(sinθ cosθ)
= cosθ/sinθ
= cotθ