Question

Sin a=0,6 и 0 Найти cos a-? , tga

Answer 1

Ответ:

cosa=0.8

tga=0.75

Пошаговое объяснение:

cosa=корень(1-sina^2)=корень(1-0,6^2)=0.8

tga=sina/cosa=0.6/0.8=0.75

Answer 2

To find the values of cos(a) and tan(a), we can use the Pythagorean trigonometric identity. Assuming we are working with a right-angled triangle, where one angle is 'a', the other two angles are 90° (right angle) and 'b', and the sides are related as follows:

sin(a) = opposite side / hypotenuse cos(a) = adjacent side / hypotenuse tan(a) = opposite side / adjacent side

Given sin(a) = 0.6, we can use this information to find the other trigonometric values.

Step 1: Find cos(a) Using the Pythagorean trigonometric identity: sin^2(a) + cos^2(a) = 1

Let's plug in the value of sin(a) and solve for cos(a):

0.6^2 + cos^2(a) = 1 0.36 + cos^2(a) = 1 cos^2(a) = 1 - 0.36 cos^2(a) = 0.64

Now, take the square root of both sides to find the positive value of cos(a):

cos(a) = √0.64 cos(a) = 0.8

So, cos(a) = 0.8.

Step 2: Find tan(a) tan(a) = sin(a) / cos(a)

tan(a) = 0.6 / 0.8

tan(a) = 0.75

So, tan(a) = 0.75.

To summarize: cos(a) = 0.8 tan(a) = 0.75