Stitz-Zeager_College_Algebra_e-book

# Verify the cofunction identities for tangent secant

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: is cos(θ)? 25 4 with θ in Quadrant I, what is sin(θ)? 9 5 with θ in Quadrant II, what is cos(θ)? sin(θ) = 13 2 cos(θ) = − with θ in Quadrant III, what is sin(θ)? 11 2 sin(θ) = − with θ in Quadrant III, what is cos(θ)? 3 28 cos(θ) = with θ in Quadrant IV, what is sin(θ)? 53 (b) If cos(θ) = (c) If (d) If (e) If (f) If 3. Find all of the angles which satisfy the given equations. √ 1 (a) sin(θ) = 2√ (c) sin(θ) = 0 √ (e) sin(θ) = (b) cos(θ) = − (d) cos(θ) = (f) cos(θ) = −1 3 2 2 2 3 2 4. Solve each equation for t. (See the comments following Theorem 10.5.) (a) cos(t) = 0 (b) sin(t) = − (c) cos(t) = 3 √ 2 2 (d) sin(t) = − 1 2 1 2 (f) sin(t) = −2 (e) cos(t) = (g) cos(t) = 1 (h) sin(t) = 1 (i) cos(t) = − √ 2 2 632 Foundations of Trigonometry 5. Use your calculator to approximate the following to three decimal places. Make sure your calculator is in the proper angle measurement mode! (a) sin(78.95◦ ) (b) cos(−2.01) (c) sin(392.994) (d) cos(207◦ )...
View Full Document

{[ snackBarMessage ]}

Ask a homework question - tutors are online