xjwill102p3mpp3 xjwill102p3mpp3

04-02-2018
Mathematics

contestada

How do I do this?

Express the following as trigonometric ratios of either 30, 45 or 60 degrees and hence find their exact values

A) sin120
B) cos225
C) tan390

Respuesta :

Аноним Аноним

04-02-2018

A sin120 = 2 sin60 cos 60 = 2 * sqrt3/2 * 1/2 = sqrt3/2

B. cos 225 = - cos 45 = - 1 / sqrt2

C tan 390 = tan 30 = 1 / sqrt3

Answer Link

Otras preguntas

What news does Puck bring to Oberon in Act III, scene ii? Question 4 options: Egeus has killed himself because his daughter is missing. Theseus has left Hippoly

Communication is now instant across the world, and has allowed businesses to operate more efficiently. What is the main cause for this growth in worldwide gl

Multiply. Express your answer in lowest terms. -3/8*(-2/9)=

Adding _____ to a query specifies conditions that must be met for the values of the records to be returned by the query. A. restrictions B. qualifications

The shorter leg of a 30 60 90 triangle is 6.4 inches long. Find the perimeter.

did nationalism have a positive or negative effect on germany/prussia?

In estimating the profitability of a catering business, _______ is most likely to be considered a fixed expense in your overhead costs. a. rental equipment b.

2. Kim is x years old. Jordan is 7 years older than Kim. Four times Jordan’s age is equal to 200. (a) Write an equation that could be used to solve for Kim’s a

Identify the different reasons people communicate.

A(n) __________ exposure is a repeated or prolonged exposure (over months or years) that may bring about slowly developing symptoms. these exposures do not caus