Question

without using trigonometric table find the value of
don't give irrelarive answers ​

Answer 1

Step-by-step explanation:

sin 30 = 1/2

cos 45 = 1/√2

tan 30 = 1/√3

cos 30 = √3/2

tan 45 = 1

applying the values , we get

5 (1/2)^2 + (1/√2)^2 - 4 (1/√3)^2

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2 (1/2)(√3/2) + 1

=5/4 + 1/4 - 4/3

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√3/2 + 1

= 1/6/ 2+√3/2

= 1/3 (2+√3)

after rationalising,

= (2-√3)/3

hope it helps

Answer 2

Answer:

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