olisewing olisewing

25-07-2022
Mathematics

contestada

suppose cos(a)=4/5. use the trig identity sin^2(a)+cos^2(a)=1 to find sin(a) in quadrant IV.

Respuesta :

djp6182583 djp6182583

25-07-2022

Answer:

sin a = -3/5

Step-by-step explanation:

sin^2(a)+cos^2(a)=1

sin^2(a)+ (4/5)^2 = 1

sin^2(a) = 1 - 16/25 = 9/25

sin a = 3/5 ( in Quadrant 1)

In quadrat IV the sine is negative

so sin a = -3/5

Answer Link

Otras preguntas

Help me out again Please thanks

Find the angle 0 between the vectors. u=(1, 1, 1, 0), v = (4, 4, 4, 4).

which expression is equivalent to the product of p+7/3 and 6/p , where p is not equal to 0? a) 6p+7/3p b) 3p+21/p c) p+42/3p d) 2p+14/p

Which option was used to revise this sentence? She opened the box cautiously. Cautiously, she opened the box.

What type of tissue shortens to perform its function?

which statement is true about water resources in the Eastern Mediterranean region

What type of cause is the following statement? All girls who like to sing should try out for the school choir.

a cereal box has dimensions of 2 in., 5 1/3 in., and 10 3/4 in. If the box contains 8 servings, how much volume does each serving take up?

7=-2.7x^2+30x+6.5 round nearest 10th

Escoge las formas correctas de los verbos usando el futuro o la combinación de ir + a + infinitivo. Select the correct forms of the verbs using either the futur