Trigonometry Answers

Find the largest value of parameter a such that equation 12sin²x * cos²x + (10a - 11)(cos⁴x - sin⁴x) = (2a-1)² has at least one real solution.

A ship sails from port P on course N 300 E. After sailing 3 miles it changes course 3000 true and sailed 4 miles. How far is the ship at the lighthouse?

If "\\theta" is an angle in the third quadrant, in which quadrant does the point (sin"\\theta" cos"\\theta" , sin"\\theta" +cos"\\theta" ) lie?

Sin3x+Sinx/Cos3x+cosx=tan2x

find one of the legs for the right-angle triangle in which it hypotenuse is 10 5m and other leg is 7m

For the function f(x) = sin x, show with the aid elementary formula

sinA=1/2(1–cos2A)

f(x+y) – f(x) = cos x sin y – 2sin x sin^2 (1/2y)

A furniture store offers free setup and delivery services to all points within a 35 mi radius of its warehouse distribution center. If you love 19 mi east and 20 mi south of the warehouse, will you incur a delivery charge?