a)) Evaliate without using trigonometric tables,sin2 28Â° + sin2 62+ – InterviewSolution

1.	a)) Evaliate without using trigonometric tables,sin2 28Â° + sin2 62+ tan238"-cor2 5+4 sec2 30
Answer» sin²28+cos²(90-62)+tan²38-tan²(90-52)+(1/4)sec²30=sin²28+cos²28+tan²38-tan²38+(1/4)sec²30=1+0+(1/4)*(4/3)=1+3=4

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