trig

posted by .

sin(-π) + cos 5π

how to solve without a calculator.
Please write steps and explain

thank you

  • trig -

    answer is -1

  • trig -

    Answer is -1

Respond to this Question

First Name
School Subject
Your Answer

Similar Questions

  1. Math

    Evaluate *Note - We have to find the exact value of these. That I know to do. For example sin5π/12 will be broken into sin (π/6) + (π/4) So... sin 5π/12 sin (π/6) + (π/4) sin π/6 cos π/4 + cos …
  2. Math integrals

    What is the indefinite integral of ∫ [sin (π/x)]/ x^2] dx ?
  3. trig

    cosθ =5/13 with -π/2 < θ <0 find each of the following sin( θ - 5π/4) cos( θ - 11π/6) tan( θ + 5π/4) can some1 explain to me how to do these?
  4. Precalculus

    Use one of the identities cos(t + 2πk) = cos t or sin(t + 2πk) = sin t to evaluate each expression. (Enter your answers in exact form.) (a) sin(19π/4) (b) sin(−19π/4) (c) cos(11π) (d) cos(53π/4) …
  5. Trig Help!

    Question: Trying to find cos π/12, if cos π/6 = square root 3 over 2, how to find cos π/12 using DOUBLE angle formula?
  6. product of function

    Given: f(x)=2 cos x and g(x)=sin x. Which of these expressions is equivalent to (fxg)(π/16)?
  7. Math/Trig

    How would I evaluate these trig functions without using a calculator?
  8. TRIGONOMETRY

    Can you check my work, please? This is for a trig study guide for my final next week. I'd like to know if I'm doing this right. :) 2. The polar coordinates of a point are given. Find the rectangular coordinates of each point. a. (5,(π
  9. Math, please help

    Which of the following are trigonometric identities?
  10. Precalc/Trig

    Sorry there are quite a few problems, but I just need to know if these are correct (and if they aren't, where I went wrong): 1. Solve these equations. tanθ = -√3 θ = 2π/3 + kπ θ = 5π/3 + kπ …

More Similar Questions