Questions tagged 'Trigonometry'
44 questions
A man stands on his balcony, 140 feet above the ground.
A man stands on his balcony, 140 feet above the ground. He looks down at the ground, with his line of sight forming an angle of 75 degrees with the building, and sees a bus stop. The function ( d = 14...
Feb 15, 2025
cos 4x – sin2x = 0 ? Trigonometry?
I have the equation cos(4x) – sin(2x) = 0 that I need help solving. Please note that it is not cos^4(x) or sin^2(x). I am looking for solutions within the domain of 0 to 2π or 0 to 360 degrees. Could...
Feb 11, 2025
How do you find the exact trigonometric ratios for the angle 3pi/4?
I took precalculus two years ago, and I don't remember where to start with this type of problem. Can someone please guide me on how to find the lengths of the sides of the triangle and then calculate...
An acute angle θ is in a right triangle with cos θ = five sixths (5/6). What is the value of sec θ?
An acute angle θ is located in a right triangle where cos θ equals five-sixths (5/6). What is the value of sec θ?
How do you find the exact value of sin(3pi/8) using the DOUBLE ANGLE FORMULAS?
How can I find the exact value of sin(3π/8) using the double angle formulas? I would appreciate a detailed explanation of the steps involved, as I have several similar questions to tackle. Thank you!
math question!?
The point P(18, 24) lies on the terminal side of the angle θ. How can we evaluate sin θ based on this information?
sin4x-cos2x=0 How do you solve?
How do you solve the equation sin(4x) - cos(2x) = 0? I would appreciate a step-by-step explanation of the solution process, including any relevant identities or methods that can be used to find the va...
Determine if the graph is symmetric about the x-axis, the y-axis, or the origin. r = 2 + 3 sin θ?
Determine whether the graph of the equation ( r = 2 + 3 \sin \theta ) is symmetric about the x-axis, the y-axis, or the origin. Please explain your reasoning and provide any necessary calculations to...
Express -150° in radian measure as a multiple of π?
Could someone please assist me with converting -150° into radian measure expressed as a multiple of π? Thank you!
Trig Question! True or False?
Reflecting the graph of y = cos(x) across the y-axis results in a graph that is identical to the original. Is this statement true or false?