Question

sin (150) - tan (315) + cos (300) + sec^2 (360)​

Answer 1

Answer:

1

Step-by-step explanation:

sin (150°) - tan (315°) + cos (300°) + $sec^{2}$ (360°)​

Sign rule: 1st (all) 2nd (sin) 3rd (tan) 4th (cos)

Alternate angle for 150 is (180-150) = 30

sin 30° = 1/2 and the sign is positive

Alternate angle for 315 is (360-315) = 45

tan 45° = 1 and the sign is negative

Alternate angle for 300 is (360-300) = 60

cos 45° = 1/2 and the sign is positive

sec 360° = 1

So, we get

1/2 - (-1) + 1/2 + 1

Answer 2

Answer:

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