15-09-2016
Mathematics

contestada

How to solve 3 sin^(2)x = cos^(2)x

Respuesta :

Panoyin Panoyin

15-09-2016

3sin²(x) = cos²(x)
cos²(x) cos²(x)
3tan²(x) = 1
3 3
tan²(x) = ¹/₃
tan(x) = ¹/₃√3
tan⁻¹[tan(x)] = tan⁻¹(¹/₃√3)
x = 30°, 150°
x = ¹/₆π radians, ⁵/₆π radians

Answer Link

Otras preguntas

what value of a makes the equation true? 9a+2=4a-18

What does the random variable (r) for a binomial experiment of n trials represent?

If a 35 ft rope is cut into two sections with one section 6 times as long as the other section, how long is the shorter piece?

Lim[(sqrt(cos(2x))-cubicrootof(cos(x))]/arctg(x^2) when x->0

Six nickels is what percent of one dollar? What percent of $2.00 would it be? Please help.

Holly decided to share 1/2 of her share of the pizza with Deb. How much did each of them actually?

why do we use a coeficient to remove the propotionality

Helen Grey By Christina Georgina Rossetti Because one loves you, Helen Grey, Is that a reason you should pout, And like a March wind veer about, And frown, and

Why are capillaries thin walled?

If a store credit account charges 1.5% interest each month, what is the APR?