Question

evaluate:4 tan square 45-sec square 60+sin square 60+cos square 90

Answer 1

Answer:

4 (tan)^2 45 -(sec)^2 60 + (sin)^2 60 + ( cos)^2 90

(1)^2 x 4 - (2)^2 + (1/ square root 2)^2 + (1)^2

8 - 4 + 1/2 + 1

9-4+1/2

18 + 1/2-4

19/2 - 4

19 - 8 /2

11/2

Step-by-step explanation:

tan of 45 is 1

sec of 60 is 2

sin of 60 is 1 by square root 2

cos of 90 is 1

on solving u get the answer

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