I am doing sum and difference formulas with sin, cos, and tan. I am doing tan75 with the difference formula. So tan 120-45 I have all the things found I just don't know...

I am doing sum and difference formulas with sin, cos, and tan. I am doing tan75 with the difference formula. So tan 120-45 I have all the things found I just don't know...

The first "<" is a one with a line under it.

In a 58° - 32° right triangle, the side adjacent to the 32° angle is 41.74 inches. If tan58° = 1.6003, find the length of the side opposite the 32° angle. Estimate your answer to 3 decimal places...

I'm having trouble solving the above question, as well as the one below tan20+tan10/1-tan20tan10=

Evaluate sin(sin-1(sin60)) [60 degrees] and evaluate cos-1(cos(cos-10.5)) if the angle is in quadrant 1.

If sin(x) = 1/8 and x is in quadrant I, find the exact values of the expressions without solving for x. a) sin(2x) b) cos(2x) c) tan(2x)

find value for sec theta when tan theta=-sqrt root 11 divided by 5, cos theta<0

A ladder leans against a wall with its foot 1.5 metres from the wall making for an angle of 45º36' with the ground. How long is the ladder?

Find the tension in each cable necessary to keep the block from moving (either sideways or downward)

A 900-lb block is being suspended and held stationary by two steel cables as shown. The first cable (to the left of the block) makes a 70 degree angle with the horizontal, while the second cable...

My professor said for this problem to use inverse trig functions, half angle, and double angle identities. Evaluate: tan(2sin-1(4/5)) Please list the answer...

limx-->positive infinity tan ( x/x^2+1) limx--> negative infinity cot ( pix/4x+1) This is so confusing for me, i would lice a detailed step...

Using the pythagorean identity, find the value of sin⊗ and tan⊗ if cos⊗= -1/2

I really need a lot of help in math, it's my worst subject. My best is English, but that's not important.

Three words. Terrible. At. Math. Could use some help understanding.

Solve for ALL values of x in the real number system. If an EXACT solution does not exist, round your answers to the nearest hundredth. sin2x = sinx

Solve for x in the interval... 0<x<2π: 3sin2(2x+1)+2sin(2x+1)-1=0 My teacher says there should be 6 answers. I have a TI-84 calculator, so maybe...

One end of a 9.3 foot pole is 13.6 feet from an observer's eyes, and the other end is 17.4 feet from the observer's eyes. Through what angle does the observer see the pole?

Prove: 1-cos2x/1+cos2x=tan2x Please include step by step and next to each step, please include the identity used! :)

Prove: SQUARE ROOT OF (3cosx+4sinx)2+(4cosx-3sinx)2 = 5 Please include step by step and the identities used next to each step! :)

Prove: sinx/sinx+cosx)=tanx/1+tanx If you could, please list the steps and include the identities next to the steps.