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...

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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°?

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

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...

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...

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)...

Convert equation to trigonometric form

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...

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

What would the area of the triangle be if angle A is 137 degrees, side b is 628.3 m and side c is 843.1 m?

I have been stuck on this one for a while. Can someone help me find x?

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

It's a circle with a sector. The sector has a triangle within it, two sides of the triangle is 5cm (the radi on either side) and the other side 8cm. You are supposed to find the shaded segment between...

i need the answer