cos(11pi/12)cos(7pi/12)+sin(11pi/12)sin(7pi/12)

cos(11pi/12)cos(7pi/12)+sin(11pi/12)sin(7pi/12)

(tan(4pi/5)-tan(2pi/15))/(1+tan(4pi/5)tan(2pi/15))

Outside temperature over a day can be modeled as a sinusoidal function. Suppose you know the temperature is 60 degrees at midnight and the high and low temperature during the day are 69 and 51 degrees,...

finding cot theta=5 in the unit circle. finding the x values

The angle theta is in the first quadrant and sin of theta = 2/sqrt(13) determine the possible coordinates for point P on the terminal arm

Find the lengths of the missing sides if side a is opposite angle A, side b is opposite angle B, and side c is the hypotenuse. cos B = 3/5 , a = 27 Find b = Find c = I'm...

The Addition Law - Trigonometry

Hi there, A straight line wrapped around the world would eventually come back to join the beginning of the line. We often describe this when describing parallel lines for example. However,...

I have a trapezium with measurements of 6m , 6m, 4m and 11m. I need to find the actual height of the trapezium shaped plot of land correct to the nearest cm. I'm a little bit confused...

A. 45° B. 90° C. 60° D. 30°

A. (-23√29)/29 B. (7√29)/29 C. (-7√29)/29 D. (23√29)/29

Please help! Use the Pythagorean Identity Sin^2 t +Cos^2 t =1 and give information to find Cos t Sin t = 2 Square root 2/ 3; 0 Less than or equal to T less then pi/2...

A. (√2/2, -√2/2) B. (√2/2, √2/2) C. (-√2/2, √2/2) D. (-√2/2, -√2/2)

How to find that vaule what are steps involved in it

A man walks along a straight line path at a speed of 4 ft/s. A searchlight is located on the ground 20 ft from the path and is kept focused on the man. 1. Write a function that relates...

trigonometry pure maths unit 1 question

Find all the solutions in the interval [0,2pi] to cos x sin x- cos x=0

I don't understand what I'm supposed to do to find the answer to this question

Use double angle identities

Trigonometry