# Abigail Armstrong

Trigonometry teacher | Verified Expert

I specialize in Trigonometry, holding a degree from the University of Southern Maine. With a passion for mathematics and years of experience, I thrive on demystifying complex concepts and guiding students to mastery. Whether it's solving triangles or navigating trigonometric functions, I'm dedicated to fostering a deep understanding and helping students excel in their studies. Let's tackle trigonometry together and unlock its fascinating intricacies.

## Questions

How do you find the derivative of #cos^-1(-1/x)# ?

How do you simplify #(sin^2x-1)/(1+sin^2x)#?

Hi there! Can anyone help solve this? :) Given tan theta = p and that theta is an acute angle, find sec 2 theta and cot (90-2theta)

How do you solve #tan^-1(2x)+tan^-1(x)= (3pi)/17#?

#tan^1(x+sqrt(1+x^2))#,Express the value of the above in the simplest form?

How do you simplify #tan(cos^(-1)x)#?

Determine the exact values of the trigonometric functions of the acute angle A, given tan A =3/7 ?

How do you find the value?

The point #(-5,-2)# is on the terminal side of an angle in standard position, how do you determine the exact values of the six trigonometric functions of the angle?

How do you determine the two coterminal angle (one positive one negative) for the angle #-420^circ#?

What is the angle θ of the ramp if monster truck drives off a ramp in order to jump on to a row of cars where the ramp's height is 8 feet and horizontal length of 28 feet?

How do you simplify the expression #(sec^2t-1)/tant#?

How do you graph #y=2cos2x#?

A triangle has sides A, B, and C. The angle between sides A and B is #(7pi)/12# and the angle between sides B and C is #pi/12#. If side B has a length of 26, what is the area of the triangle?

How do you find the exact value of #csc ((5pi)/6)# using the half angle formula?

What are the components of the vector between the origin and the polar coordinate #(9, (-3pi)/4)#?

How do you graph #f(x)= 2 sin 4x#?

How do you find the values of all six trigonometric functions of a right triangle ABC where C is the right angle, given a=20, b=21, c=29?

What is the exact values of 3 sinx= 0.90?

If #tan x=6/8#, how do you find cos x?