Question

1. Given that sinα = 1 /2 and cosβ = 1 /2 , then the value of (α + β) is

2. The value of the expression [cosec (75° + θ) – sec (15° – θ) – tan (55° + θ) + cot (35° – θ)] is

3. The value of (tan1° tan2° tan3° ... tan89°) is

4. The angle of elevation of the top of a vertical tower from a point on the ground is 60 . From another point 10 m vertically above the first, its angle of elevation is 45 . Find the height of the tower

5. Prove that : question in above image....


pls answer...
thanks

Answer 1

3. Answer is 1
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