Question

please send all answers fast
I will mark you as brainliest

Answer 1

Answer:

Answer in one word

Step-by-step explanation:

1)it is zero (0)because sin 45 and cos 45 is 1/√2

when u multiply them u will get 1/2 and tan 45 is 1 so when u subtract 1/2 and 1/2 u will get the ans. as 0

2)ans. is 2a because

sin 30=AB /CB where AB = a and CB = the distance by which u travel to the top of the hill

also take CB as x.

So, 1/2(sin 30's value )=AB /CB

1/2=a/x

so when u cross multiply u get x=2a

3)ans. is 6.28 because the sector arc formula is theta/360x 2¶r.

u have to tahe theta as 60 and divide it with 360 and will get 1/6.

Take that value and multiply it with 2¶r (take ¶(pi) value as 3.14 and r as 6 cm).

4) ans . is tan2theta