energysclothing energysclothing

03-05-2019
Mathematics

contestada

how to find the cosine of 81 in terms of sine?

Respuesta :

altavistard altavistard

03-05-2019

Answer:

Step-by-step explanation:

The cosine of angle Ф is √(1 - sin²Ф), which is positive if our angle 81 degrees is in Quadrant I.

sin 81° = 0.9877, so (sin 81°)² = 0.9755, and

cos 81° = 1 - 0.9755 = 0.0245

Answer Link

Otras preguntas

Evaluate the expression when a=7 and x=-6. -a + 8x Marking brainliest

I need help with this question causes the European exploration. Pick one of these

You have $25.00. You want to buy chocolate for Valentines Day. Each box costs $6.99?Do you have enough money to buy three boxes? Do you have any amount of money

Which statement best describes the role of the speaker of the House of Representatives?

at an all way stop, when it comes to right of way, what does ''first in'' ''first out'' mean

A certain species of trilobite is known to have lived 300 million years ago. If this index fossil was found in a rock layer containing other fossils, what could

Which statement best defines the relationship between work and energy? Work can transfer energy between objects and increase radiant energy. Work can transfer e

I need the answer pls

Consider the system of linear equations 2x + 3y = 8 and 3x + y = –2. Which statement is correct? The point (1, 2) is not a solution to the system of equations b

two ways in which the power of the legislature could be limited?