Prove that sec2A + cos2A can never be less than 2 . Please solve this question fast

Prove that sec2A + cos2A can never be less than 2 . Please solve this question fast

the light from a lamp casts a shadow of a man standing 10 feet away from the lampost. The shadow is 5 feet long. The angle of elevation from the tip of the shadow to the lamp is 50 degrees.

let theta be an angle in quadrant 3 so that cos theta= -4/5 find the values of csc theta and tan theta Thankya

1. Though how many radians does the second hand of a clock move in 2 minutes and 40 seconds. This question is one of the units in Advanced Functions, I really have hard time answering...

if the hypotenuse of the original right triangle is 100cm, and a vertical line splits the base of the triangle into 2 parts, one with a length of 64cm and the other of 36cm, what are the side lengths...

the difference between 90° and 30° is 60°. Then why is sine60° not equal to sine90°- sine30°?

Can't type the question. Check image here: https://qph.ec.quoracdn.net/main-qimg-40e86811bbef80d9c69a9e3258f8e884.webp

Billy plants a new tree and attaches a rope to help support the tree while its roots take hold. He attached an 8ft rope to the tree and to a stake in the ground. From the stake in the ground the angle...

tan^3(θ)=3tan(θ) solve for all solutions.. please provide steps so I can follow

please help!

A circle is drawn through points A and B cutting the base line at P1 and P2. If the observer is at position P1 or P2 then male a conjecture about the relationship between the angles from the observer...

1) What are the solutions of sin (x – π) + 2 = 1 in [0, 2π)? 2) Use your calculator to find arcsin (sin (150 degrees) ). Why didn’t the calculator say 150 degrees? 3) What are...

need to salve this thank you

What is the polar representation of z = 6i? a. 6cis i b. 6 cis π c. π cis 6 d. 6cis (π/2) e. 36 I cant seem to figure this one out

Convert equation to trigonometric form

A tower 7 m high stands on top of a building 9 m high. An observer at the bottom of the building notices that as she walks away from the building the angle which the tower subtends at her eyes seems...

Quadrilateral ABCD is a rhombus with side of lengths 8cm. The measure of one angle of the rhombus is 157 degrees. Find the lengths of the diagonals of the rhombus without using...

Using trigonometric methods (law of cosine/sine) or cosine/sine/tangent, determine which set of lengths will form a triangle with the greater area? Show work for both sets. Set #1)...

1. 4 cos x * 2 √ 3 = 0 2. 2sin^2 x - sin x = 1 3. cos^2 x = cos x

Thank you for your help!