Question

the value cos (75+theta)- sec ( 15-theta)-
tan ( 55+theta) + Cot (35-theta) = ?​

Answer 1

Answer:

cosec(75∘+θ)−sec(15∘−θ)−tan(55∘+θ)+cot(35∘−θ) . Now complementary of cosec(75∘+θ) is sec[90∘−(75∘+θ)]=sec(15∘−θ) . So, the correct answer is “0”. Note: Sine, cosine, tangent, cotangent, cosecant and secant are six main trigonometric ratios,.