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

Plz show work and explain Haley and Madison are arguing over a math problem. Haley insists that a square with a area of 196 square units is bigger than Madison’

The freedoms in the First Amendment are collectively known as the freedom of

How is india a secular democracy ?

During most of a cell’s life cycle, DNA is found in a mass of loose strands called?

I need help on this show steps pleaseeee!!!

What is the force exerted on a moving charge of –2.0 μC at a 20° angle through a magnetic field of 3.0 × 10–4 T with a velocity of 5.0 × 106 m/s? 3.0 × 10–3 N 1

according to the humanistic approach, people will be happy when

Culture is ____ a factor in world conflict

Which of the following functions has the largest value when x = 3? c(x) = 3x2 + 5x + 22 j(x) = 12x a(x) = 9x

What is the Senate’s only defense to a filibuster?What is the Senate’s only defense to a filibuster? A.) - calling a recess B.) - invoking cloture C.) - ending