Question

6 sin 150° + 2 cos 120° + tan 135°

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Answer 1

Answer:

6 sin (180-30) + 2 cos(180-60)+ tan (180-45)

6sin30 -2cos60- tan45

6*1/2 - 2*1/2 - 1

3-1-1

=1

Step-by-step explanation:

6sin30 -2cos60- tan45

sin(180-30)=sin30

cos(180-60)= -cos60 (180-60 means it lies in 2nd quadent so cos is negative

tan(180-45) = -tan45 (tan is also negative in 2nd quadent)

6*1/2 - 2*1/2 - 1

now changing the values of sin 30, -cos60 and -tan 45 and multiplying it by the digits which is in front of it

3-1-1

6*1/2 gives 3, 2*1/2 gives 1

=1

when u minus 3 from 2 u get the answer 1