Question

Tolong dong

tolong dengan cara nya, jika asal-asalan akan di report​

Answer 1

Jawab:

Penjelasan dengan langkah-langkah:

Answer 2

Jawab:

invers fungsi trigonometri

cos a = y  maka  a =  cos⁻¹ (y)

Penjelasan dengan langkah-langkah:

1. cos⁻¹ (-1/2) = a

cos a = - 1/2 =  - cos π/3 = cos ( π - π/3)

cos a = cos (2π/3)

a = 2π/3

.

2. cos⁻¹(1/2)  - cos⁻¹ (√2/2 ) + cos⁻¹ (√3 /2) =

cos 60 = 1/2

cos 45 = 1/2 √2

cos  30 = 1/2 √3

= 60 - 45 + 30

= 45 = π/4

.

3. cos⁻¹(0) - cos⁻¹ (1/2) - cos⁻¹(√3/2) =

cos 90 = 0

cos 60 = 1/2

cos 30  = 1/2 √3

=  90 - 60 - 30

= 0

.

4. tan (cos⁻¹ (4/5)}=

a = cos⁻¹ (4/5)

cos a  = 4/5

tan a = 3/4

tan (cos⁻¹ (4/5)}=  tan a = 3/4

.

5. sin ( cos⁻¹ (5/13)}=

a = (cos⁻¹ (5/13)

cos a =   5/13

sin a = 12/13

sin (cos⁻¹ (5/13)}= sin a = 12/13

.

6. cosec { cos⁻¹ ( -1) } =

a=  cos⁻¹ ( -1)

cos a = -1 =  cos 180

a= 180

cosec a  = 1/sin a = 1/sin 180 =  1/0 = ~